Enzymes in the small intestine break down proteins, carbohydrates, and lipids. These enzymes are named after the substrate they break down

A.Protease enzyme
B.Carbohydrate enzymes
C.Lipase enzymes

Answer:

the answer is weak base

The limiting reactant for the reaction, given that 20 g of Mg reacted with 20 g of oxygen is magnesium, Mg

First, we shall write the balanced equation for the raection. Details below:

aMg + bO₂ -> cMgO

2Mg + O₂ -> 2MgO

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

2Mg + O₂ -> 2MgO

From the balanced equation above,

48.6 g of Mg reacted with 32 g of O₂

Therefore,

20 g of Mg will react with = (20 × 32) / 48.6 = 13.17 g of O₂

From the above, we can see that only 13.17 g of oxygen, O₂ out of 20 g  reacted with 20 g of magnesium, Mg

Thus, we can conclude that the limiting reactant is magnesium, Mg

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I think its the

2nd one

In the chemical reaction between Fe(II) ions and dilute sulfuric acid when hydrogen peroxide is added Fe(II) gets converted to Fe(III) ,on retaining mixture and adding NaOH precipitate of ferric hydroxide is obtained.

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic reactions

2)organic reactions

3) biochemical reactions

During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

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A convergent plate boundary is a type of plate boundary where two tectonic plates move towards each other and collide. When the leading edge of one plate dips beneath the other plate, it creates a subduction zone.

Volcanoes form at convergent plate boundaries because as the leading edge of the subducting plate sinks into the mantle, it melts and releases volcanic magma. This magma rises to the surface, where it can create a volcano. Volcanoes can form along the boundary where the two plates meet, or they can form on the overriding plate above the subduction zone. The type of volcano that forms depends on the types of rocks and minerals present in the magma and the characteristics of the subduction zone.

Volcanoes are formed by the subduction of plates. Subduction at convergent plate boundaries is the cause of many volcanoes around the world. Decompression causes melting along diverging plate boundaries. Long fissures and fissures in the earth allow lava to flow.

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As two plates move towards one another and collide, it forms a convergent plate boundary. A subduction zone is formed when the front edge of one plate descends beneath the other plate.

Convergent border describes the location where two plates collide. One plate may bend downward into a deep undersea trench or both plates may flex upward into mountain ranges as a result of the collision.

Examples. Because of the collision of the Indian and Eurasian plates, the Himalayas are being formed. As the northern Pacific Plate subducts beneath the NW North American Plate, the Aleutian Islands are the result. By subducting beneath a South American Plate, the Nazca Plate formed the Andes.

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Answer:

See explanation

Explanation:

Intermolecular forces are forces of attraction that exist between molecules of a substance in a particular state of matter.

The dominant intermolecular force of attraction in H2O is the hydrogen bond. The hydrogen bond exists between molecules of a substance when the substance is made of hydrogen atoms bonded to atoms of a highly electronegative element. Hence, strong hydrogen bonding accounts for the high boiling point of water.

The magnitude of hydrogen bonding between molecules depends on the electro negativity of the atoms to which hydrogen is bonded.

The more the electro negativity of the atoms to which hydrogen is bonded, the greater the magnitude of intermolecular hydrogen bonding.

Since the electro negativity of elements decrease down the group, the strength of intermolecular hydrogen bonding between the molecules decreases as follows;

H2O> H2S> H2Se> H2Te

Answer:

0.287 M

Explanation:

Multiply the concentration of each solution by the volume of each (in liters) to get the moles of NaOH in that solution.

0.15 M • 5.4000 L = 0.81 mol NaOH

4.0 M • 0.2012 L = 0.80 mol NaOH

Add the mol of NaOH together to get the total --> 0.81 + 0.80 = 1.61 mol NaOH

Divide by the total volume of solution (5400.0 mL + 201.2 mL = 5,601.2 mL = 5.6012 L)

1.61 mol / 5.6012 L = 0.287 M NaOH

the concentration of glucose in the unknown solution is 9.23 x 10^-5 mol/L. The absorbance of a mixture containing 1 ml of hexokinase reagent and 10 μl of a glucose solution with an unknown concentration was measured at 340 nm and found to be 0.575.

Convert the absorbance value to the molar concentration of NADH Since the molar extinction coefficient for NADH we can use the Beer-Lambert law, which states that A = εlc, where A is the absorbance, ε is the molar extinction coefficient, l is the path length.
 

Convert the molar concentration of NADH to the concentration of glucose. The hexokinase reaction converts glucose to glucose-6-phosphate, while consuming NADH in the process. Therefore, the ratio of NADH consumed to glucose consumed is 1:1. it is also the molar concentration of glucose in the solution.

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Answer:

it is damp moist and other things

Explanation:

The FALSE statement about bisphenol A (BPA) is B) BPA was banned by the FDA in 2009 due to safety concerns.

What is bisphenol A?

Bisphenol A (BPA) is a synthetic compound that is utilized in the production of plastic materials such as polycarbonates, resins, and epoxy resins.

It is employed to make water bottles, baby bottles, and other items that we use on a daily basis.

However, studies have indicated that exposure to BPA can lead to health issues.

In particular, the chemical has been linked to breast cancer, prostate cancer, and other health issues.

The false statement about bisphenol A (BPA) is B) BPA was banned by the FDA in 2009 due to safety concerns.

Explanation:The other statements about bisphenol A (BPA) are true.

It is commonly found in canned foods and plastic products, as well as other household items.

Studies have linked exposure to BPA to several health concerns, including breast cancer and prostate cancer. Although the FDA has taken steps to limit the use of BPA in certain products, such as baby bottles and sippy cups, it has not been banned entirely due to concerns about its impact on the economy and industry.

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The excess reactant in this reaction is AgNO3.

To determine the excess reactant, we need to compare the amount of each reactant to the stoichiometric ratio given by the balanced equation. The molar mass of NaCl is 58.44 g/mol, and the molar mass of AgNO3 is 169.87 g/mol. We can calculate the moles of NaCl and AgNO3 using their respective masses:

Moles of NaCl = 4.00 g / 58.44 g/mol = 0.0685 mol

Moles of AgNO3 = 10.00 g / 169.87 g/mol = 0.0589 mol

According to the balanced equation, the stoichiometric ratio between NaCl and AgNO3 is 1:1. This means that 0.0685 moles of NaCl should react with 0.0685 moles of AgNO3. However, we have 0.0589 moles of AgNO3, which is less than the required amount. Therefore, AgNO3 is the limiting reactant.

Since AgNO3 is the limiting reactant, it will be completely consumed in the reaction, and some NaCl will be left over. Hence, NaCl is the excess reactant in this reaction.

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The distance from the thermal energy source affect the amount of thermal energy transfer occurring in a substance in a way that area that the radiation is spread over is four times as large for just the double distance.

Thermal energy that can transfer between substances always does so from one that is warmer to one that is cooler. Conduction, convention, and radiation are the three categories. Distance causes the heat radiation emitted by a source, such the sun, to disperse.

As it moves away from the source, the same quantity of energy is dispersed over a larger and larger sphere every second. For simply the twice distance, the radiation's distribution area is four times as large.

The solar constant (also known as the solar coefficient), abbreviated S, refers to the Sun's intensity on Earth, \(W/m^{2}\), in units. This information reveals how much radiation enters a square metre of Earth (or any other planet at a similar distance from the sun).

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All cell structures work together to maintain homeostasis.

Single-celled organisms, also known as unicellular organisms, maintain homeostasis through a variety of mechanisms. Homeostasis is the maintenance of a stable internal environment, despite changes in the external environment.

Overall, single-celled organisms have evolved a range of mechanisms to maintain homeostasis in their unicellular state, allowing them to survive and thrive in diverse environments.

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Answer:

HCl is an acid, and Cl– is its conjugate base.

Explanation:

HCl is an acid, and \(Cl^-\) is its conjugate base.

The reaction that we are to consider is; HCl + H2O → \(Cl^-\)+ \(H3O^+\).

According to the Brownstead - Lowry definition of an acid, an acid is a substance that donates a proton while a base is a substance that accepts a proton.

The conjugate base of a substance is obtained by the loss of a proton from the substance.

Now, if you look at HCl and \(Cl^-\), you will notice that \(Cl^-\) is obtained from HCl by loss of a proton.

Therefore, HCl is an acid, and \(Cl^-\) is its conjugate base.

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Alcohols cannot be utilized as a solvent for Grignard's reagent because of the respective alkane that is produced when the Grignard reagent reacts with them. Thus, tetrahydrofuran or diethyl ether are appropriate solvents for the Grignard reagent.

In the Grignard synthesis, an alkyl bromide is reacted with magnesium metal to produce an organomagnesium reagent. An organomagnesium molecule also referred to as an electrophilic "Grignard reagent," reacts with an acid to form a range of products in the Grignard reaction, an organic reaction.

An alkyl or aryl halide reacts with magnesium metal via a radical process to produce the Grignard reagent. An organomagnesium molecule known as a Grignard reagent has the chemical formula R-Mg-X, where R stands for an alkyl or aryl group and X for a halogen.

They are typically created by reacting magnesium with an aryl halide or an alkyl halide. For organic synthesis, Grignard reagents (RMgX) are frequently employed. Yet, these flammable solvents are used to supply these highly reactive compounds, adding to the complexity of their delivery.

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Calcium oxide is a drying agent that strongly interacts with water while absorbing carbon dioxide.

In the simplest described definition, a drying agent, as it pertains to industrial and chemical processes, is a term given to a chemical that works to remove water from a compound that is currently in solution.

A compound that has been absorbing water for too long, or for an extended period of time, can become contaminated. Calcium oxide is a drying agent that strongly interacts with water while absorbing carbon dioxide.

Therefore, calcium oxide is a drying agent that strongly interacts with water while absorbing carbon dioxide.

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The non-vascular plants such as mosses and liverworts are found to be the first plants that are appeared on the earth. The correct option is A.

The non-flowering plants with stems and leaves which lack true roots and are able to produce spores are commonly defined as mosses. Mosses and their similar members like hornworts and liverworts belong to the  plant kingdom Bryophyta.

The minute hair like structures which are seen in mosses are called rhizoids. The major function of rhizoids is anchoring the plant to soil or rock. The mosses get all the essential nutrients through the rhizoids.

The mosses can survive in high temperature ranges and can also grow in snowy mountains and hot deserts.  They also play an important role in maintaining moisture of the soil and also prevents erosion.

All the previous studies have shown that the first land plants appeared on the earth were the non- vascular plants like mosses and liverworts.

Thus the correct option is A - Mosses.

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The melting of ice is a spontaneous reaction at room temperature and pressure because it is accompanied by an increase of entropy.

The spontaneity of a reaction is determined by the change in Gibbs free energy (∆G), which is given by the equation:

∆G = ∆H - T∆S

where ∆H is the change in enthalpy, T is the temperature in Kelvin, and ∆S is the change in entropy. A reaction is spontaneous if ∆G is negative.

In the case of ice melting at room temperature and pressure, the process is accompanied by an increase in entropy because the solid phase (ice) has a more ordered arrangement than the liquid phase (water).

This increase in entropy (∆S) contributes a negative term to the ∆G equation, making ∆G negative and the reaction spontaneous.

Therefore, the correct option is (b) Melting is accompanied by an increase of entropy, which explains why the melting of ice is a spontaneous reaction at room temperature and pressure.

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Answer: things arnent always as they seem

Explanation:

The density of a liquid is determined by the average mass of its particles and the distance between them. The mass of the particles is related to their atomic or molecular weight, while the distance between the particles is related to their intermolecular forces and the temperature of the liquid.

The density of a liquid is directly related to the number of particles in a given volume. If the particles are more tightly packed, the liquid will be denser. The packing of particles is influenced by various factors, such as the shape and size of the particles, the strength of the intermolecular forces between the particles, and the temperature of the liquid.

For example, liquids with larger and heavier particles, such as mercury, have higher densities than liquids with smaller and lighter particles, such as water. This is because larger particles occupy more space per unit volume, leading to a higher density.

The strength of the intermolecular forces between the particles also affects the density of a liquid. Liquids with stronger intermolecular forces, such as hydrogen bonding, tend to be more tightly packed and have higher densities than liquids with weaker intermolecular forces.

Lastly, the temperature of the liquid also affects its density. As the temperature of a liquid increases, the particles move faster and occupy more space, resulting in a decrease in density. Conversely, as the temperature of a liquid decreases, the particles move slower and pack more closely together, resulting in an increase in density.

Answer:

The Independent Variable is what we change or control in the experiment. The Dependent Variable is what we are testing and will be measured in the experiment. The Control Variables are what we keep the same during the experiment to make sure it's a fair test. hope this helps =)

Explanation:

Answer:

Q = mcT ...you can either substitute the molar heat capacity of water in the place of c or the specific heat capacity of water.

Explanation:

Answer:

explation

Explanation:

you put ice cold water in a glass, and in another glass put boiling water, how long would it take for the two cups of water to be roughly the

Due to the surface tension of water and the crystals ability of diffusion the crystals are placed at the bottom of the beaker of water​.

Diffusion is defined as the process of movement of molecules which takes place under concentration gradient. It helps in movement of substances in and out from the cell.The molecules move from lower concentration region to a higher concentration region till the concentration becomes equal.

There are 2 main types of diffusion:

1) simple diffusion-process in which substances move through a semi-permeable membrane without the aid of transport proteins.

2) facilitated diffusion- It is a passive movement of molecules across cell membrane from higher concentration region to lower concentration.

There are 2 types of facilitated diffusion one is osmosis and dialysis.

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Hence, it takes two half-lives for a reactant's concentration to drop to 25% of its initial value.

The amount of solute contained in a specific amount of solution is how concentrated a material is. The number of moles of solute in 1 L of solution, or molarity, is the standard unit of measurement for concentrations.

You can determine how much solute has dissolved in the solvent by looking at the concentration of the solution. One teaspoon of salt per two cups of water, for instance, would be the concentration.

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