HLEP NOW 5TH GRADE SCIENCE!!!!!! ESSAY!!!
What is the main difference between a chemical and Physical change? Use examples to support your answer.
Answers
Answer:
Physical change
When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.
Physical change is a temporary change.
Physical change is a temporary change.
A physical change involves very little to no absorption of energy.
Generally, physical changes do not involve the production of energy.
In a physical change, no new substance is formed.
Physical change is easily reversible i.e original substance can be recovered.
Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.
Chemical change
When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.
A chemical change is a permanent change.
Chemical change both physical and chemical properties of the substance including its composition
During a chemical reaction, absorption and evolution of energy take place.
Chemical changes usually involve the production of energy (which can be in the form of heat, light, sound, etc.)
A chemical change is always accompanied by one or more new substance(s).
Chemical changes are irreversible i.e. original substance cannot be recovered.
A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
for more information please visit https://byjus.com/chemistry/difference-between-physical-and-chemical-change/#:~:text=A%20chemical%20change%20is%20a,i.e.%20shape%2C%20size%2C%20etc.&text=Some%20examples%20of%20physical%20change,of%20coal%2C%20rusting%2C%20etc.
Hope this helps
Related Questions
in the lewis dot structure for phosphoric acid, h3po4, phosphorus and the oxygen without a hydrogen have formal charge of ___ and ___, respectively. assume that the octet rule is not violated.
Answers
In the Lewis dot structure for phosphoric acid, h3po4, phosphorus and the oxygen without a hydrogen have formal charge of +1 and -1, respectively, assuming that the octet rule is not violated.
This is because phosphorus in this structure has 5 valence electrons, and in order to achieve an octet, it forms 5 covalent bonds with the oxygen and hydrogen atoms. Each bond contributes 2 electrons to the shared pool, leaving one lone pair on each oxygen atom and none on the phosphorus atom, hence a formal charge of +1.
The oxygen atoms without hydrogen each have 6 electrons, one more than what they would have in a neutral state, hence a formal charge of -1.
The formal charge helps in determining the most stable Lewis dot structure for a molecule, and the structure with the lowest formal charges on each atom is usually the most stable.
Therefore, the Lewis dot structure for H3PO4 with a formal charge of +1 on the phosphorus and -1 on the oxygen atoms is the most stable configuration.
To know something about the formal charges, click below.
https://brainly.com/question/30459289
#SPJ11
An atom of an element always contains
Answers
Answer:
An atom of an element always contain three fundamental particles called electrons(e-) , neutron ( n zero) and protons ( p+)
An atom of an element always contains a proton, electron and neutron.
What is an atom ?Every atom is made up of a nucleus and one or more electrons that are attached to the nucleus. One or more protons and a number of neutrons make up the nucleus. Only the most common type of hydrogen is neutron-free. Every solid, liquid, gas, and plasma is made up of atoms that are either neutral or ionized.
But when it comes to the word atom, we must go back to 400 B.C. Greece. And Democritus, a brilliant philosopher, proposed the Greek word atomos, which means uncuttable.
Every atom is made up of a nucleus and one or more electrons that are attached to the nucleus. One or more protons and a number of neutrons make up the nucleus.
Thus, An atom of an element always contains a proton, electron and neutron.
To learn more about an atom, follow the link;
https://brainly.com/question/29695801
#SPJ2
if you increase the concentration of an base, what changes in both types of bases?
Answers
Answer: Increasing the concentration of a base will cause the pH level of the solution to increase. Increasing the concentration of an acid will cause the pH level of the solution to decrease.
Explanation:
a small group of atoms does not collapse into a clump because ________ quickly disperses them.
Answers
A small group of atoms does not collapse into a clump because thermal energy quickly disperses them.
Thermal energy refers to the kinetic energy of the atoms due to their random motion and vibrations. In a system with a relatively small number of atoms, thermal energy plays a significant role in preventing the atoms from collapsing into a clump.
Kinetic energy is the energy possessed by an object due to its motion. It depends on the mass of the object and its velocity, representing the work required to accelerate or decelerate it.
The random motions and collisions between the atoms cause them to disperse rather than clump together. This phenomenon is commonly observed in gases, where individual atoms or molecules remain dispersed rather than aggregating into a clump or solid structure.
To learn more about thermal energy refer here:
https://brainly.com/question/31631845#
#SPJ11
.?lkikjjjmmjj
hhhhgyhhjjj
Answers
Answer:
ertyuioekgdctifrofy?
Explanation:
What is the purpose of the calibration curve? Why is it absolutely necessary for this experiment? The purpose of the calibration curve is to determine the concentration of the solution. It is absolutely necessary for this experiment since __
Answers
The purpose of the calibration curve is to determine the concentration of a solution.
It is absolutely necessary for this experiment because it establishes a relationship between the measured response of an instrument (e.g., absorbance) and the concentration of the analyte. This relationship allows for the quantification of unknown samples based on their measured response.
In many analytical experiments, such as spectrophotometric analysis, the concentration of a solution is determined by measuring a physical property, such as absorbance or fluorescence. However, the instrument response alone does not provide the concentration information. The calibration curve is created by analyzing a series of standard solutions with known concentrations of the analyte.
By plotting the measured instrument response (e.g., absorbance) against the known concentrations, a linear relationship or a curve can be established. This calibration curve serves as a reference or standard to determine the concentration of unknown samples by comparing their instrument response to the curve.
Without the calibration curve, it would be impossible to accurately quantify the concentration of the analyte in the unknown samples. Thus, the calibration curve is essential for obtaining accurate and reliable results in the experiment.
Learn more about calibration curve here: brainly.com/question/30590682
#SPJ11
Señala en cuál de los siguientes sistemas puede haber un equilibrio físico dinámico o un equilibrio químico. a. Cristalización y disolución del cloruro de sodio. b. Conversión de oxígeno gaseoso en ozono. c. Condensación y evaporación de un líquido. d. Reacción entre H2 y l2 para producir Hl. e. Una solución saturada de azúcar. por favor, solo me falta esa pregunta.
Answers
Answer:
Ver explicacion
Explanation:
Cristalización y disolución de cloruro de sodio: equilibrio físico dinámico
Conversión de oxígeno gaseoso en ozono - equilibrio químico
Condensación y evaporación de un líquido - equilibrio físico dinámico
Reacción entre H2 y 12 para producir Hl - equilibrio químico
Una solución saturada de azúcar - equilibrio físico dinámico
El equilibrio alcanzado en los procesos físicos se llama procesos físicos. El equilibrio físico se llama. Ejemplos de tales procesos físicos incluyen; condensación y evaporación, cristalización y disolución, etc.
Un equilibrio dinámico ocurre en un sistema químico cuando la reacción directa y la reacción inversa se desarrollan a la misma velocidad.
Which of the following terms refers to the resistance of a liquid to flow? viscosity surface tension adhesion polarizability cohesion capillary action
Answers
Viscosity refers to the resistance of a liquid to flow, as it quantifies how easily a liquid flow and is determined by the internal friction within the liquid.
Viscosity is a physical property that characterizes the resistance of a fluid to flow. It relates to the internal friction within a liquid as its molecules move past one another. Liquids with high viscosity have a thicker consistency and flow more slowly, while liquids with low viscosity have a thinner consistency and flow more easily.
Surface tension, on the other hand, refers to the cohesive forces between molecules at the surface of a liquid, causing it to behave as if it has a stretched elastic-like film. Adhesion is the attraction between molecules of different substances. Polarizability is a measure of how easily the electron distribution in a molecule can be distorted by an external electric field. Cohesion is the attraction between molecules of the same substance. Capillary action is the ability of a liquid to flow in narrow spaces against the force of gravity, due to the combined effects of adhesive and cohesive forces.
The term that specifically refers to the resistance of a liquid to flow is viscosity. Surface tension, adhesion, polarizability, cohesion, and capillary action are related properties but have different meanings and mechanisms.
To know more about viscosity, visit
https://brainly.com/question/30799929
#SPJ11
A microwave transforms electrical energy into -
Answers
Answer:
the microwave energy converts to heat energy to cook the food.
Explanation:its simple
Answer:
A microwave oven converts electrical energy into radiant energy (which is converted to thermal energy), and a television converts electrical energy into sound energy and radiant energy.:
Hydrogen bonding is strongest between molecules of
A) H2S
B) H2Se
C) H2O
D) H2Te
Answers
I hope this helped out, have a nice day! <3
Where can electrons be found?
Answers
The American flag flies on a black flagpole. Light from the sun hits the flag and the flagpole. How is it that you can see the blue, red, and white colors of the flag and the black of the flagpole?(1 point)
Red stripes reflect red and absorb all other light, as does the blue square with blue; white stripes and stars absorb all wavelengths; and the flagpole reflects all wavelengths.
Red stripes reflect red and absorb all other light, as does the blue square with blue; white stripes and stars absorb all wavelengths; and the flagpole reflects all wavelengths.
Red stripes absorb red and reflect all other light, as does the blue square with blue; white stripes and stars absorb all wavelengths; and the flagpole reflects all wavelengths.
Red stripes absorb red and reflect all other light, as does the blue square with blue; white stripes and stars absorb all wavelengths; and the flagpole reflects all wavelengths.
Red stripes absorb red and reflect all other light, as does the blue square with blue; white stripes and stars reflect all wavelengths; and the flagpole absorbs all wavelengths.
Red stripes absorb red and reflect all other light, as does the blue square with blue; white stripes and stars reflect all wavelengths; and the flagpole absorbs all wavelengths.
Red stripes reflect red and absorb all other light, as does the blue square with blue; white stripes and stars reflect all wavelengths; and the flagpole absorbs all wavelengths.
Answers
Explanation:
you did there a copy/paste chaos.
anyway, whatever number in the sequence it is, the right answer is of course :
Red stripes reflect red and absorb all other light, as does the blue square with blue; white stripes and stars reflect all wavelengths; and the flagpole absorbs all wavelengths.
that is why white and black are scientifically not colors.
white is in fact all colors in one (because all light is reflected there), and black is the lack of any light and therefore color. this is like at night, when a lot of cars are driving, but one does not have any lights on - you can find that car by the dark spot it creates in the middle of all the light of the other cars. black means we see no light at all at that spot.
To solve this we must be knowing each and every concept related to reflection. Therefore, the correct option is option A among all the given options.
What is reflection?Any surface will reflect light according to two criteria. They are known as the laws of reflection. Regular reflection occurs when any object's light reflects off of polished surfaces.
Because of the smooth surface's ability to reflect light, we can see the object's reflection in the mirror when light rays strike it. A plane mirror will reflect an image in which the distance of the object from the mirror is equal to the vertical distance from either the mirror.
Red stripes reflect red and absorb all other light, as does the blue square with blue; white stripes and stars reflect all wavelengths; and the flagpole absorbs all wavelengths.
Therefore, the correct option is option A.
To know more about reflection, here:
https://brainly.com/question/18772331
#SPJ2
Which molecules and cellular components pass through the nuclear pore during normal cellular activity? select all that apply. dna ribosomal subunits mrna nucleosomes
Answers
The nuclear pore complex (NPC) is responsible for regulating the transport of molecules between the nucleus and cytoplasm in eukaryotic cells.
During normal cellular activity, the following molecules and cellular components can pass through the nuclear pore:
mRNA (messenger RNA): mRNA molecules are responsible for carrying genetic information from the DNA in the nucleus to the cytoplasm, where they serve as templates for protein synthesis.
Ribosomal subunits: Ribosomes are responsible for protein synthesis. The small and large ribosomal subunits are synthesized in the nucleolus within the nucleus and are exported to the cytoplasm through the nuclear pore, where they assemble to form functional ribosomes.
Nucleosomes: Nucleosomes are structural units of chromatin, composed of DNA wrapped around histone proteins. While individual nucleosomes may not pass through the nuclear pore intact, the components of nucleosomes, such as DNA and histones, can traverse the pore separately.
Therefore, the molecules and cellular components that pass through the nuclear pore during normal cellular activity are mRNA, ribosomal subunits, and the components of nucleosomes (such as DNA and histones).
know more about eukaryotic here
https://brainly.com/question/30335918#
#SPJ11
Question 1 of 30
Why does atomic size increase as you go down a group on the periodic table?
A. Because the number of electron shells increases
B. Because there is more total attraction between electrons in the
shells and protons in the nucleus
C. Because the number of electron shells decreases
D. Because there is less total attraction between electrons in the
shells and protons in the nucleus
SUBMI
Answers
Answer:
Explanation:
Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius.
if a 250 ml beaker weighs 95.4 g, what is the mass in kilograms?
Answers
Mass conversion from grams to kilograms
In physics and chemistry, it is common to express the mass of an object in grams (g) or kilograms (kg). To convert from grams to kilograms, we divide the mass in grams by 1000. This conversion allows us to express larger masses in a more manageable unit.
For example, in this case, the mass of a 250 ml beaker is 95.4 g. To convert this to kilograms, we divide 95.4 by 1000:
95.4 g / 1000 = 0.0954 kg
Therefore, the mass of the 250 ml beaker is 0.0954 kilograms.
It's important to note that the conversion factor between grams and kilograms is constant and equal to 1000. This means that regardless of the mass, the conversion will always result in the same factor of 1000.
Here you can learn more about grams to kilograms
https://brainly.com/question/566174#
#SPJ11
Chemical Reactions - Problems
4 NH, +5 O, → 4 NO+6H_O
Which of the following are the reactants in the reaction above?
NH,
NO
I
H₂O
Submit v
IT
Answers
The mineral lead leaves a streak on a piece of pottery, but the mineral topaz does not. Which mineral has a greater hardness? answers; They have the same hardness, lead, topaz
Answers
Answer:
The answer would be topaz
Pb(NO3)2 + KI —> PbI2 + KNO3
If you start with 25.00 grams of potassium iodide how much lead II iodide could be formed?
Answers
The balanced chemical equation for the reaction is:
Pb(NO3)2 + 2 KI → PbI2 + 2 KNO3
From the equation, we can see that 2 moles of KI are required to react with 1 mole of Pb(NO3)2 to form 1 mole of PbI2.
The molar mass of KI is 166.00 g/mol, so 25.00 grams of KI is equivalent to:
25.00 g / 166.00 g/mol = 0.1506 mol KI
Based on the balanced chemical equation, we know that 1 mole of Pb(NO3)2 reacts with 2 moles of KI to form 1 mole of PbI2. Therefore, the number of moles of Pb(NO3)2 required to react with 0.1506 mol KI is:
0.1506 mol KI × (1 mol Pb(NO3)2 / 2 mol KI) = 0.0753 mol Pb(NO3)2
The molar mass of PbI2 is 461.01 g/mol, so the mass of PbI2 that could be formed from 0.0753 mol Pb(NO3)2 is:
0.0753 mol Pb(NO3)2 × (1 mol PbI2 / 1 mol Pb(NO3)2) × 461.01 g/mol = 34.76 g PbI2
Therefore, if we start with 25.00 grams of potassium iodide, we could form a maximum of 34.76 grams of lead II iodide.
When an atom loses electrons, it becomes a
Answers
Answer:
cation
Explanation:
An atom with more protons than electrons is a cation. An atom with more electrons than protons is an anion.
Answer:
A Cation should be the correct answer.
Explanation:
It will become a positively charged ion, which is known as a cation. This is because it loses an electron, so it becomes positively charged.
for a weak acid such as ch3cooh, select all species present at the stoichiometric point when titrating with naoh
Answers
At the stoichiometric point for a weak acid/strong base titration, the cation of the strong base (\(Na^{+})\) and the anion of the weak acid (the conjugate base of the weak acid \((CH_{3}CO ^{2} ^{-} )\) are predominant species in solution.
Neutral ions (the cation from the strong base and the anion from the strong acid) and water are the only species present in the solution at equivalency. The pH at the equivalence point for a weak acid/strong base titration is more than 7.
At the start of the titration, the pH increases significantly. This occurs as a result of the weak acid's anion changing into a common ion, which lessens the acid's ability to ionize. Following the initial, abrupt increase, the titration curve only modifies gradually. This is as a result of the solution's role as a buffer.
Learn more about titration:
https://brainly.com/question/30350845
#SPJ4
The complete question is:
For a weak acid such as ch3cooh, select all species present at the stoichiometric point when titrating with naoh what species are present in the solution at the stoichiometric point?
In the Millikan oil droplet experiment, the oil is sprayed from an atomizer into a chamber. The droplets are allowed to pass through the hole into the chamber so that their fall can be observed. The top and bottom of the chamber consist of electrically charged plates. The upper plate is positively charged, and the lower plate is negatively charged. X rays are introduced into the chamber so that when they strike the oil droplets, the droplets will acquire one or more negative charges. The electric field (voltage) is applied to the metal plates.
Watch the animation and identify the effects of an electric field on the motion of a negatively charged oil droplet. Consider the gravitational force as Fg and the electric force as Fe. All the other forces acting on the oil droplet can be ignored as their effect on the motion of the oil droplet is negligible.
A/ In the absence of an electric field, the oil droplet falls freely due to the gravitational force.
B/ If Fe is increased until it is equal to Fg, the negatively charged oil droplet will remain stationary.
C/ If Fe is greater than Fg, the negatively charged oil droplet will move freely toward the negatively charged plate.
D/ In the presence of an electric field, the negatively charged oil droplet moves freely toward the negatively charged plate.
** I chose B, but that was the wrong answer
Answers
C/ If Fe is greater than Fg, the negatively charged oil droplet will move freely toward the negatively charged plate.
In the Millikan oil droplet experiment, the negatively charged oil droplets are subjected to an electric field created by the charged plates. The electric force (Fe) acts on the oil droplet in a direction opposite to the gravitational force (Fg). When Fe is greater than Fg, the electric force overcomes the gravitational force, causing the negatively charged oil droplet to experience an upward force. As a result, the oil droplet moves freely upward toward the negatively charged plate.
Option B is incorrect because if Fe is equal to Fg, the forces balance each other, resulting in a stationary droplet. However, the question states that Fe is increased until it is greater than Fg, implying that the droplet is no longer stationary but moves in response to the electric force.
Therefore, option C is the correct answer, as it describes the effect of an electric field on the motion of a negatively charged oil droplet in the Millikan oil droplet experiment.
To learn more about Millikan oil droplet experiment, here
https://brainly.com/question/32330429
#SPJ4
What did John Dalton contribute to the understanding of the atom?
Answers
John Dalton contribute to the understanding of the atom that all matter was composed of atoms, indivisible and indestructible building blocks.
While all atoms of an element were identical, different elements had atoms of differing sizes and mass.
What is an atom?An atom is a particle of matter that uniquely defines a chemical element.
An atom consists of a central nucleus that is usually surrounded by one or more electrons.
Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties.
Dalton based his theory on the law of conservation of mass and the law of constant composition.
The theory states that all matter is made of atoms, which are indivisible.
(1) All matter is composed of tiny, indivisible particles, called atoms, that cannot be destroyed or created.
(2) Each element has atoms that are identical to each other in all of their properties.
Learn more about the atom here:
https://brainly.com/question/1566330
#SPJ2
how many moles are in 23.8 g of sulfur dioxide
Answers
Answer:
0.371
Explanation:
number of moles = mass / Ar
= 23.8g / 32.1 + (16.0 × 2)
= 0.37129485179 = 0.371 (3 s.f).
hope it helps :)
T/F scientists speculate that europa may have liquid water below its frozen surface.
Answers
True. Scientists do speculate that Europa, one of Jupiter's moons, may have liquid water below its frozen surface. Multiple lines of evidence, including observations from spacecraft missions like Galileo, suggest the presence of a subsurface ocean on Europa.
The moon's icy crust appears to have cracks and features that indicate a dynamic interior. Additionally, tidal heating caused by Jupiter's gravitational forces is believed to generate enough heat to maintain a subsurface ocean of liquid water.
Further support for this hypothesis comes from observations of geysers or plumes erupting from Europa's surface, which suggest the presence of liquid water reaching the moon's outer shell. These findings have sparked interest in exploring Europa further to study its potential habitability and the possibility of finding signs of life.
While the presence of liquid water on Europa is still considered a hypothesis, ongoing research and future missions, such as the Europa Clipper mission planned by NASA, aim to gather more data and provide a more comprehensive understanding of this fascinating moon.
To know more about NASA
brainly.com/question/29890206
#SPJ11
How to Write the Formula for NaNO3 (Sodium nitrate)?
Answers
NaNO3 is the chemical formula for sodium nitrate, which is an inorganic compound composed of sodium, nitrogen, and oxygen atoms.
Here, correct answer will be
Sodium nitrate is a white crystalline solid that is odorless and has a slightly salty taste. It is an essential component in many fertilizer products and is also used in the production of explosives and fireworks.
The chemical formula for sodium nitrate is NaNO3. The 'Na' stands for sodium, the 'N' stands for nitrogen, and the 'O3' stands for three oxygen atoms. Sodium is a group 1 metal element and nitrogen is a group 15 nonmetal element.
In the compound, sodium is the cation and nitrate is the anion. The compound has an ionic bond, which is formed when electrons are transferred from the sodium atom to the nitrate ion. The sodium nitrate molecule has a neutral charge, meaning that the number of protons and electrons are the same.
Know more about inorganic compound here
https://brainly.com/question/16443702#
#SPJ11
Please answer this, im too lazy to do the experiment.
1. What happened to the heavier materials in a mixture when left undisturbed?
2. How can we separate liquid and heavier particles in a mixture?
3. What materials are attracted by the magnet?
Answers
Explanation:
(1) heavier materials sink to the bottom of the mixture
(2)use a filter funnel and filter paper (filtration method)
(3) ferromagnetic materials (typically metals)
triglyceride one equivalent of one glycerol and three equivalents of myristic acid
Answers
Answer:
A triglyceride is formed by combining one equivalent of glycerol with three equivalents of a fatty acid. Myristic acid is a type of saturated fatty acid with a 14-carbon chain. Therefore, a triglyceride with one equivalent of glycerol and three equivalents of myristic acid would have the chemical formula:
CH3(CH2)12COO - O - C(CH2)14COO - O - CH2 - CH(OOCR') - CH2(OOCR') - CH2(OOCR')
where R' represents the fatty acid group derived from myristic acid (CH3(CH2)12COO-).
How the abiotic factors impacted the biotic factors in Chernobyl??
URGENT!!
Answers
Answer:
The Chernobyl disaster of 1986 was a nuclear accident that had a significant impact on the environment and the living organisms in the surrounding area. The abiotic factors, including radiation and temperature changes, had a profound impact on the biotic factors, including plants and animals.
Radiation: One of the primary abiotic factors that impacted the biotic factors in Chernobyl was radiation. The explosion at the nuclear reactor released large amounts of radioactive material into the environment, which had a devastating impact on the plants and animals in the area. Many of the trees and plants in the surrounding forests died, and the animals that ate these plants were also affected. The radiation also caused genetic mutations in many of the organisms in the area.
Soil: The soil in the area was also impacted by the radiation, which caused changes in the nutrient levels and pH levels. This made it more difficult for plants to grow and survive in the area, and it also impacted the animals that depended on these plants for food.
Temperature: The temperature in the area was also impacted by the radiation, which caused changes in the weather patterns. The increased levels of radiation also caused higher temperatures in the area, which made it more difficult for plants and animals to survive.
Overall, the abiotic factors, including radiation, soil, and temperature changes, had a significant impact on the biotic factors in Chernobyl. Many of the plants and animals in the area were negatively impacted, and the ecosystem in the surrounding area was altered in ways that are still being studied today.
What is missing in the nuclear reaction shown below? 10/5 B + 4/2 He → 13/7 N + _____
Answers
The missing particle in the nuclear reaction is a proton, and the balanced equation is: 10/5 B + 4/2 He → 13/7 N + 1/1 H. In the nuclear reaction shown, 10/5 B (Boron-10) and 4/2 He (Helium-4) combine to form a new nucleus 13/7 N (Nitrogen-13).
The mass number (the sum of protons and neutrons) of the reactants is 10 + 4 = 14, and the mass number of the products is 13. This means that a particle with a mass number of 1 (since 14 - 13 = 1) must be emitted during the reaction.
Now, we need to determine what type of particle has a mass number of 1. There are a few possibilities, including a proton (1/1 H), a neutron (1/0 n), or an alpha particle (4/2 He). However, an alpha particle was already involved in the initial reaction and cannot be emitted again.
The most likely particle to be emitted in this case is a proton (1/1 H), which has a mass number of 1 and is commonly emitted in nuclear reactions. Therefore, the missing particle in the reaction is a proton, and the balanced equation is: 10/5 B + 4/2 He → 13/7 N + 1/1 H
To know more about nuclear reaction, refer
https://brainly.com/question/25387647
#SPJ11
The specific heat capacity of liquid water is 4.18 J/g-K. How many joules of heat are needed to raise the temperature of 5.00 g of water from 15.0 °C to 36.5 °C?
Answers
The specific heat capacity of a substance is the amount of energy required to raise the temperature of 1g of the substance by 1K.
\(\begin{gathered} q=mc\Delta T \\ q:energy\text{ }(J)=x \\ m:mass\text{ }(g)=5.00g \\ c:specific\text{ }heat\text{ }capacity\text{ }(Jg^{-1}K^{-1}) \\ \Delta T:change\text{ }in\text{ }temperature\text{ }(K) \\ \Delta T:(final\text{ }temperature-initial\text{ }temperature) \end{gathered}\)Calculating the change in temperature:
\(\Delta T:(273.15K+36.5\degree C)-(273.15K+15\degree C)=21.5K\)By substituting what we are given into the equation to solve for the unknow x we have;
\(\begin{gathered} q=5.00g\times4.18Jg^{-1}K^{-1}\times21.5K \\ q=+449.35J \end{gathered}\)Answer: Energy needed is 449.35J