When heated, solid copper(II) carbonate decomposes to solid copper(II) oxide and carbon dioxide gas. Give the balanced chemical equation (including phases) that describes this reaction.

Answer: "Three Electrons Are Gained"(N⁻³)

Nitrogen has an Incomplete Octet With an Electronic Configuration of

1S²2S²2P³

The P orbital takes a Maximum of 6 electrons.

When this shell is filled... The electronic Configuration of Neon is obtained.

1S²2S²2P⁶

This is also know as the Nitride Ion (N⁻³).

Answer:

D

Explanation:

took the test

Answer:

No and Yes

Explanation:

This is both possible and impossible. When you put your mind to what you believe, you can achieve it through patience and minded values. Your mind can either be your Greatest enemy or your Best Ally.

Answer:

The molar mass of atoms of an element is given by the standard relative atomic mass of the element multiplied by the molar mass constant

Explanation:

The relationship between KMT and sea level rise is 760 nm as the sea level rises because the gas level is increasing.

KMT is described as the behavior of gases and also it is used to explain the macroscopic properties of a gas such as pressure and temperature.

Sea level rise is an increase in the level of the world oceans due to the effects of global warming and burning fossil fuels is one of the causes of global warming because it releases carbon dioxide and other heat-trapped gasses into the atmosphere.

So, the relationship between kinetic molecular theory (KMT) and sea level rise is the distance between sea level and KMT which is 760nm as the sea level is rising because the gas level is increasing.

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The one-way forces act on atoms are forces that cause bonds to form. The correct option is D.

Force is an influence that causes a change in any still object. It can be push or pull. Forces are of different types and functions. In chemistry, the forces are referred to as the force that acts in the transfer of electrons into the nucleus or the formation of bonds.

An atom is a divisible and smallest unit of matter. It is divided into electron, proton, and neutron. Every element is made up of many atoms. Elements make compounds by joining with other elements by bonds, and this is done by the force that causes the bonds to form.

The force causes the atoms to form bonds with each other. Now the bonds are of different types, so bonds are formed in different types of atoms or elements. So, the force that joins the atoms will be of a single form

Thus, the correct option is D. Forces cause bonds to form.

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Answer:

A violent shaking of Earth's crust. It happens when suddenly two pieces of earth slip past each other. And can sometimes cause tsunamis'.

Aluminium and Chromium are known to form self-limiting oxide surface layers that are protective against further corrosion.

Stainless steel is a well-known example of an alloy that resists corrosion with the help of an oxide layer because the alloying element chromium (Cr) creates an impenetrable stable oxide layer (Cr2O3, also known as chromia) along the grain boundaries and surface.

The electrochemical process of anodizing transforms the metal surface into an attractive, long-lasting, corrosion-resistant anodic oxide finish. Although other nonferrous metals, such as magnesium and titanium, can also be anodized, aluminum is best suited for the process.

Normal protection for aluminum in air is provided by a molecule-thin layer of its own oxide.

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Answer:

Clavulanic acid has two (2) chiral centers.

Explanation:

A chiral center is a center (usually carbon) with four different substituents.

The structure of clavulanic acid is shown in the attachment below.

Consider the labeled diagram in the attachment,

Carbon A is not a chiral carbon because it has two hydrogen atoms attached to it

Carbon B is not a chiral carbon because it has only three substituents

Carbon C is a chiral carbon because it has four different substituents

Carbon D is a chiral carbon because it has four different substituents

Carbon E is not a chiral carbon because it has only three atoms directly attached to it

Carbon F is not a chiral carbon because it has only three atoms directly attached to it

Carbon G is not a chiral carbon because it has two hydrogen atoms attached to it

Carbon H is not a chiral carbon because it has only three substituents

Then, only carbons C and D are chiral carbons.

Hence, clavulanic acid have two (2) chiral centers.

Answer: A : 3

Explanation: 18 CO2 / 6 CO2 = 3 C6H12O6

Answer:

A = 3.

Explanation:

Here is how:

To determine the number of molecules of C6H12O6 (glucose) needed to produce 18 molecules of CO2, we need to consider the balanced chemical equation for the complete combustion of glucose:

C6H12O6 + 6O2 -> 6CO2 + 6H2O

From the balanced equation, we can see that 1 molecule of glucose (C6H12O6) produces 6 molecules of CO2. Therefore, we can set up a proportion to find the number of glucose molecules needed:

1 molecule of glucose produces 6 molecules of CO2

x molecules of glucose produce 18 molecules of CO2

Using the proportion:

1/6 = x/18

To solve for x, we can cross-multiply:

6x = 18

Dividing both sides by 6:

x = 3

Therefore, 3 molecules of C6H12O6 are needed to produce 18 molecules of CO2.

Answer:

a. size: large, drop height: 1 meter, surface: hard floor

size: large, drop height: 10 meters, surface: hard floor

Explanation:

The two sets of conditions that fit these criteria are:

a. size: large, drop height: 1 meter, surface: hard floor

e. size: large, drop height: 10 meters, surface: hard floor

To determine the effect of increasing drop height upon the force experienced by the egg, the two sets of experimental conditions should keep all other factors constant (i.e., the size of the egg and the surface onto which it is dropped should be the same in both trials) while varying only the drop height.

From the options you've provided, the two sets of conditions that fit these criteria are:

a. size: large, drop height: 1 meter, surface: hard floor

e. size: large, drop height: 10 meters, surface: hard floor

These two conditions keep the size of the egg and the surface constant while varying the drop height, allowing you to study the effect of the drop height on the force experienced by the egg.

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Answer: Primary consumers make up the second trophic level. They are also called herbivores. They eat primary producers—plants or algae—and nothing else. For example, a grasshopper living in the Everglades is a primary consumer

Answer:

primary consumer make up the second trophic level .they are also herbivores they eat primary consumer plants or alger and nothing else .for example a grasshopper living in the everglades is a primary consumer

Answer:

First, we need to determine the molar mass of HCl.

The molar mass of HCl = the mass of hydrogen (1.008 g/mol) + the mass of chlorine (35.45 g/mol) = 36.45 g/mol.

Next, we can use Avogadro's number (6.02 x 10^23 molecules/mol) to convert the number of molecules to moles:

6.02 x 10^24 molecules / 6.02 x 10^23 molecules/mol = 10 moles

Finally, we can use the molar mass to convert moles to grams:

10 moles x 36.45 g/mol = 364.5 grams

Therefore, the mass of 6.02 x 10^24 molecules of HCl is 364.5 grams.

The pH of the solution in which one normal adult dose aspirin is dissolved is :  2.7

Given data :

mass of aspirin = 640 mg = 0.640 g

volume of water = 10 ounces = 0.295735 L

molar mass of aspirin = 180.16 g/mol

moles of aspirin = mass / molar mass = 0.00355 mol

First step : calculate the concentration of aspirin

= moles of Aspirin / volume of water

= 0.00355 / 0.295735

= 0.012 M

Given that pKa of Aspirin = 3.5

pKa = -logKa

therefore ; Ka = \(10^{-3.5}\) = \(3.162 * 10^{-4}\)

From the Ice table

\(3.162 * 10^{-4}\) = \(\frac{x + H^+}{[aspirin]}\)  = \(\frac{x^{2} }{0.012-x}\)

given that the value of Ka is small we will ignore -x

x² = \(3.162 * 10^{-4} * 0.012\)

x = \(1.948 * 10^{-3}\)  

Therefore

[ H⁺ ] = \(1.948 * 10^{-3}\)

given that

pH = - Log [ H⁺ ]

     = - ( -3 + log 1.948 )

     = 2.71 ≈ 2.7

Hence we can conclude that The pH of the solution in which one normal adult dose aspirin is dissolved is :  2.7

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By removing the need to build additional transmission lines and equipment, energy storage may reduce costs for utilities and their customers.

By removing the need to build additional transmission lines and equipment, energy storage may reduce costs for utilities and their customers. Energy storage's inherent ability to offer backup power in the event of grid failure is a feature that both residential consumers and commercial owners find highly desirable.

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4.7 × 10²⁴ atoms Li

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

7.8 mol Li

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

We are told to round to 2 sig figs. Follow sig fig rules and round.

4.69716 × 10²⁴ atoms Li ≈ 4.7 × 10²⁴ atoms Li

Answer:

\(m_{Ag}=135.8gAg\)

\(Y=88.4\%\)

Explanation:

Hello there!

In this case, according to the described chemical reaction, it is possible to compute the theoretical mass of silver as mass via the 1:2 mole ratio of copper to silver and their atomic mass in the periodic table, in order to perform the following stoichiometric setup:

\(m_{Ag}=40.gCu*\frac{1molCu}{63.55gCu}*\frac{2molAg}{1molCu}*\frac{107.87gAg}{1molAg}\\\\ m_{Ag}=135.8gAg\)

Next, given the actual yield of 120 g, we compute the percent yield via:

\(Y=\frac{120g}{135.8g}*100\%\\\\Y=88.4\%\)

Regards!

The pOH of the 0.001 M NaOH solution is approximately 3.

To determine the pOH of a solution, we need to know the concentration of hydroxide ions (OH-) in the solution.

In the case of a 0.001 M NaOH solution, we can assume that all of the NaOH dissociates completely in water to form Na+ and OH- ions. Therefore, the concentration of hydroxide ions in the solution is also 0.001 M.

The pOH is calculated using the equation:

pOH = -log[OH-]

Substituting the concentration of hydroxide ions, we have:

pOH = -log(0.001)

Using a calculator, we can evaluate the logarithm:

pOH ≈ 3

Therefore, the pOH of the 0.001 M NaOH solution is approximately 3.

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Answer:

Exotérmica.

Explanation:

¡Hola!

En este caso, dado que la mayoría de reacciones de combustión son exotérmicas, al generar calor en los productos, es posible inferir que esta reacción, referida a la combustion de metano es exotérmica debido a lo anteriormente mencionado, ya que el término de energía de reacción, 531 kcal, está al lado de los productos, lo que quiere decir que es energía generada.

¡Saludos!

Answer:

ang hirap na nag tanung

The mass of Na₂CO₃ needed to generate 0.0135 mole of CO₂ is 1.431 grams

We'll begin by obtaining the mole of Na₂CO₃ that reacted to produce 0.0135 mole of CO₂

Na₂CO₃ + 2HCl -> 2NaCl + H₂O + CO₂

From the balanced equation above,

1 mole of CO₂ was obtained from 1 mole of Na₂CO₃

Therefore,

0.0135 mole of CO₂ will also be obtained from 0.0135 mole of Na₂CO₃

Now, we shall determine the mass of Na₂CO₃ needed for the reation. Details below:

Mole = mass / molar mass

0.0135 = Mass of Na₂CO₃ / 106

Cross multiply

Mass of Na₂CO₃ = 0.0135 × 106

Mass of Na₂CO₃ = 1.431 grams

Therefore, the mass of Na₂CO₃ needed is 1.431 grams

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Answer:



Explanation:

To solve this problem, we need to use the Avogadro's number to convert the given number of molecules to moles, and then use the molar mass of CCl4 to convert to grams.

1 mole of any substance contains Avogadro's number of particles, which is approximately 6.02 × 10^23 particles.

The molar mass of CCl4 is 12.01 + 4(35.45) = 153.82 g/mol.

So, we have:

4.63 × 10^23 molecules of CCl4 = (4.63 × 10^23) / (6.02 × 10^23) moles of CCl4

= 0.769 moles of CCl4

Then, we can use the molar mass of CCl4 to convert to grams:

0.769 moles of CCl4 × 153.82 g/mol = 118.3 g

Therefore, 4.63x10^23 molecules of CCl4 is equivalent to 118.3 grams of CCl4.

The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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From the atomic clock that utilizes C-133 which has an approximate frequency of 9.193 x 109 Hz. The wavelength of the energy is calculated to be 0.0326m.

From the given information:

Recall that:

The wavelength is the spatial successive distance between two crests of a wave and can be expressed by the formula:

\(\mathbf{\lambda = \dfrac{c}{f}}\)

\(\mathbf{\lambda = \dfrac{3.00 \times 10^8 \ m/s }{9.193 \times 10^9 \ 1/s}}\)

\(\mathbf{\lambda =0.0326 \ m}\)

Therefore, we can conclude that the wavelength of the atomic clock is 0.0326m. As such Option D is correct.

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1) 155.52 g of oxygen of magnesium chlorate. 2) 6,246.41 g of copper(I) sulfide is produced from 78.5 moles of copper. 3) 175.95 kg of potassium produce 9.00 x \(10^3\) . 4) 1.49 x \(10^-4\)g of calcium oxide is formed from 2.95 x \(10^-6\) moles of aluminum oxide and calcium phosphide.

1. The balanced equation for the decomposition of magnesium chlorate is:

2Mg\((ClO_{3})\)2(s) → 2MgO(s) + \(3O_{2} (g)\) +\(2Cl_{2} (g)\)

From the equation, 2 moles of magnesium chlorate produce 3 moles of oxygen gas.

So, 3.24 moles of magnesium chlorate will produce (3/2) x 3.24 = 4.86 moles of oxygen.

The molar mass of oxygen is 32 g/mol.

Therefore, the mass of oxygen produced is:

4.86 moles x 32 g/mol = 155.52 g

2. The balanced equation for the reaction between copper and sulfur is:

2Cu(s) + S(s) → \(Cu_{2}S(s)\)

From the equation, 2 moles of copper react with 1 mole of sulfur to produce 1 mole of copper(I) sulfide.

So, 78.5 moles of copper will produce (1/2) x 78.5 = 39.25 moles of copper(I) sulfide.

The molar mass of copper(I) sulfide is 159.16 g/mol.

Therefore, the mass of copper(I) sulfide produced is:

39.25 moles x 159.16 g/mol = 6,246.41 g

3. The balanced equation for the reaction between potassium and water is:

2K(s) + 2\(H_{2}O\)(l) → 2KOH(aq) + \(H_{2}\)(g)

From the equation, 2 moles of potassium react with 2 moles of water to produce 1 mole of hydrogen gas.

So, 9.00 x \(10^3\) moles of hydrogen gas will be produced by the reaction of (1/2) x 9.00 x \(10^3\) = 4,500 moles of potassium.

The molar mass of potassium is 39.10 g/mol.

Therefore, the mass of potassium required is:

4,500 moles x 39.10 g/mol = 175,950 g or 175.95 kg

4. The balanced equation for the reaction between calcium phosphide and aluminum oxide is:

\(3Ca_{3}P_{2}\)(s) +\(10Al_{2}O_{3}(s)\) → 9CaO(s) + \(2Al_{2}S_{3}\)(s) + \(6P_{4}\)(g)

From the equation, 3 moles of calcium phosphide react with 10 moles of aluminum oxide to produce 9 moles of calcium oxide.

So, 2.95 x\(10^-6\) moles of aluminum oxide will produce (9/10) x 2.95 x \(10^-6\) = 2.655 x \(10^-6\) moles of calcium oxide.

The molar mass of calcium oxide is 56.08 g/mol.

Therefore, the mass of calcium oxide formed is:

2.655 x\(10^-6\) moles x 56.08 g/mol = 0.000149 g or 1.49 x \(10^-4 g\).

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The chemical equation of sodium hydroxide (NaOH) reacting  with hydrochloric acid ( HCI) to create sodium chloride and water is a neutralization reaction.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

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The half equation for this reaction is 2H2 + O2 = 2H2O and this is reduction because it is taking place in cathode.

Does cathode or anode decrease occur?

Although the direction of spontaneous electron flow in galvanic cells may be reversed in electrolytic cells, the definitions of cathode and anode where reduction takes place at the cathode and oxidation happens at the anode remain the same.

Which ions undergo cathodic reduction?

The positively charged ions will migrate toward the cathode after becoming reduced by receiving electrons. Since positive ions pick up electrons at the negative cathode, reduction takes place there.

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The mass of product D would be 52.8 grams.

According to the law of conservation of mass, mass can neither be created nor destroyed in the course of chemical reactions, but can be converted from one form to another during the course of the reaction.

Thus, if the mass of CD is 66.06 grams and it breaks down into C and D, the individual masses of C and D must sum up to 66.06.

In other words:  Mass of CD = Mass of C + Mass of D

Thus:

Mass of D = Mass of CD - Mass of C

The mass of C is given as 13.26 grams

Mass of D = 66.06 - 13.26 = 52.8 grams

In other words, the mass of D would be 52.8 grams.

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The mass of the product D in the reaction is 52.84 g.

We know that we have to apply the law of the conservation of mass in the case. In the law of the conservation of mass, we know that mass can neither be created nor destroyed but the mass can be converted from one form to the other.

We have been told that the mass of the CD is 66.06 g and then that the mass of D is 13.16 g. It would then mean that the mass of the product C that we have would then be from the statement; 66.06 g  - 13.16 g

= 52.84 g

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Answer:

4.20 moles NF₃

Explanation:

To convert between moles of N₂ and NF₃, you need to use the mole-to-mole ratio from the balanced equation. This ratio consists of the coefficients of both molecules from the balanced equation. The molecule you are converting from (N₂) should be in the denominator of the ratio because this allows for the cancellation of units. The final answer should have 3 sig figs because the given value (2.10 moles) has 3 sig figs.

1 N₂ + 3 F₂ ---> 2 NF₃

2.10 moles N₂        2 moles NF₃
---------------------  x  ---------------------  =  4.20 moles NF₃
                                  1 mole N₂

Answer:

nail rust!!!!!!!!!!!!!!!!!!

Answer:

2

Explanation:

Number 1 wouldn't be because it is a physical change

Number 3 wouldn't be because it is a physical change, as well

Number 4 wouldn't be because it is a physical change, too.

Therefore, it is 3

Hopefully I helped!

-Lavander Vye

Answer:

B

Explanation:

E = hc/\(\lambda\). Remember, it is in meters not nanometers so you have to convert. You end up with B.