For the following equilibrium reaction, what will happen if heat is removed (the temperature goes down)?



CO(g) + 2H2(g) ⇌ CH3OH(g) + heat

Answer:

Decreases  

Explanation:

Answer:

D

Explanation:

All chemical reaction produces heat so if you cool it down there will be no reaction.

Although the data for the experiment was not provided, we can offer a generalized answer in that when performing an experiment to achieve absolute zero temperatures, the value will never match the exact value.

Absolute zero is the lower limit of temperature. It is considered the coldest possible temperature that can exist. However, any attempt to reach this temperature in a controlled environment has failed, scientists do not think it is possible to recreate this temperature.

Therefore, we can confirm that the value of the absolute zero experiments did not match the accepted value. If the hypothesis was that it would be difficult or impossible to achieve, then the data would support the hypothesis, otherwise, it would fail to do so.

In summary, absolute zero is a temperature that cannot be recreated in a lab, so the value in this experiment does not match the accepted value and there is no further exploration to be done on this matter.

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Answer:

B. habitat

Explanation:

got it right on my test hope this helps:)

Answer:

It's habitat.

Explanation:

I took the Module 3 Exam and got it right.

Answer: 45.42 mL

Explanation: M1V1 = M2V2

Answer:

D

Explanation:

I just did it on Edge

Answer:It’s D

Explanation: It was in my test

Answer:

If there are more products than reactants, that means the reaction has shifted towards the left, which is the backward direction. If there are more reactants than products, that means the reaction has shifted towards the right, which is the forward direction.

The partial pressure of hydrogen in the collected gas sample is 733.0 mm Hg (calculated by subtracting the partial pressure of water, 17.0 mm Hg, from the total atmospheric pressure, 750.0 mm Hg).

When a gas is collected over water, the presence of water vapor affects the total pressure observed. In this case, the total atmospheric pressure is given as 750.0 mm Hg, and the partial pressure of water vapor at 19.5°C is 17.0 mm Hg.

To determine the partial pressure of hydrogen, we need to subtract the partial pressure of water vapor from the total atmospheric pressure. Partial pressure refers to the pressure exerted by an individual gas component in a mixture. In this scenario, the collected gas is primarily hydrogen, with water vapor being the other component.

By subtracting the partial pressure of water vapor (17.0 mm Hg) from the total atmospheric pressure (750.0 mm Hg), we can find the partial pressure of hydrogen:

Partial pressure of hydrogen = Total atmospheric pressure - Partial pressure of water vapor

Partial pressure of hydrogen = 750.0 mm Hg - 17.0 mm Hg

Partial pressure of hydrogen = 733.0 mm Hg

Therefore, the partial pressure of hydrogen in the collected gas sample is 733.0 mm Hg.

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Answer: Molarity is the concentration of a solution expressed as the number of moles of solute per litre of solution

Explanation: Molarity is the concentration of a solution expressed as the number of moles of solute per litre of solution

Answer:

A. A measurement of the concentration of a solution.

Explanation:

The other user was correct. :)

The heat capacity for the metals are;

Aluminum -  0.89

Copper - 0.11

Iron - 0.44

Lead - 0.12

The specific heat of a substance is denoted by the symbol "C" and is typically measured in units of J/g·°C (joules per gram per degree Celsius) or cal/g·°C (calories per gram per degree Celsius).

The specific h

We have that;

For Aluminum;

c = 4.184 * 39.85 * 4.7/11.98 * 72.9

= 783.6/873.3

= 0.89

For Copper;

c =  4.184 * 12.14 * 1.9/12.14 * 75.4

= 96.5/915.3

= 0.11

For Iron

c =  4.184 * 40.24 * 2.4/12.31 * 75.1

= 404.1/924.5

= 0.44

For Lead

c = 4.184 * 39.65 * 0.7/12.46 * 76.7

c = 116.1/955.68

= 0.12

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Answer:

Mutualism

Explanation:

In the case of human blood, this buffering reaction helps maintain an optimal pH range of 7.35-7.45.

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It is impossible to combine KOH and HI to create a buffer solution.

A buffer solution, also referred to as a pH buffer or hydrogen ion buffer, is an aqueous mixture of a weak acid and its conjugate base, or vice versa. The pH scarcely changes at all when a small amount of a strong acid or basic is added to it. Buffer solutions are used in a wide range of chemical processes to keep pH values almost constant. Buffering is used by many living systems to regulate pH in the natural world. For instance, the bicarbonate buffering system regulates the pH of blood, and bicarbonate also acts as a buffer in the ocean.

The pH of a solution containing a buffering agent can only fluctuate within a specific range, regardless of what else may be in the solution. This is necessary for the enzymes in biological systems to function properly. For instance, the primary mechanism for maintaining the blood's pH between 7.35 and 7.45 is a blend of carbonic acid and bicarbonate found in the plasma component of human blood. Outside of this exact pH range, metabolic diseases called acidosis and alkalosis that finally end in mortality rapidly develop if the necessary buffering capacity is not immediately restored.

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Answer:

Explanation:

36 grams HClX (1mole HCl /36.46097 g HCl) X (6.02 X 10^23 particles/ 1mole)

=5.943890138 X 10^23 Molecules

As there are total of two atoms in HCl molecule( one hydrogen and one chlorine,

No. of atoms in one mole of HCl = 2x5.943890138x10²³=1.188778028 x10²³ atoms.  If you need it to the correct sig figs answer is 1.8 X x10²³ atoms.

here is where the numbers came from

the 1moleHCl/36.46097 g HCl is the Molar mass (get it from the periodic table

the 6.02 X 10^23 parcticle (atoms or molecules) / 1 Mole is avogadro's number

Answer:

Magma

Explanation:

Magma is the hot liquid under earths surface

Answer:

The sun's position near earth

Explanation:

Answer:

30 ml

Explanation:

Volume=1600cm³=1.6dm³=1.6L

Temperature=25°C=273+25=298K

Pressure=75000Pa

Now

Apply ideal gas equation

The number of moles needed is

n=48.43mol.

Calculations

Given the values of the volume and temperature, we would convert them to the required units.

Volume=1600cm³=1.6dm³=1.6L

Temperature=25°C=273+25=298K

Pressure=75000Pa

We would use the ideal gas equation

PV=nRT

n=PV/RT

n=75000(1.6)/8.314(298)

n=48.43mol

Answer:

3.33 ml

Explanation:

We have

pH to be equal to pKa + log [ NaAc / HAc]

pH = 4.30

pKA = 4.78

This is expressed as

4.30 = 4.78 + log [ NaAc / HAc]

log [ NaAc / HAc] = - 0.48

[ NaAc / HAc] = 10^-0.48

= 0.33

Naac/HAc = 0.33

From here we cross multiply to get

NaAc = 0.33 HAc

The ratio can be given as 1 : 0.33 or 3:1

Moles of NaAc = 800 x 0.10 / 1000

= 0.08

With a ratio of 3 : 1 NaAC and HAc

We have 0.06 mol NaAc and 0.02 mol HAc

moles of HCl = 0.02 mol

Volume of Hcl = 0.02x1000 = 20

20/6.0

= 3.33 Ml

The volume of 6.0 M HCL should be 3.33 ml.

Since

pH to be equal to pKa + log [ NaAc / HAc]

pH = 4.30

pKA = 4.78

Now we can do like

4.30 = 4.78 + log [ NaAc / HAc]

log [ NaAc / HAc] = - 0.48

[ NaAc / HAc] = 10^-0.48

= 0.33

Naac/HAc = 0.33

Now

NaAc = 0.33 HAc

The ratio can be given as 1 : 0.33 or 3:1

So,

Moles of NaAc = 800 x 0.10 / 1000

= 0.08

With a ratio of 3 : 1 NaAC and HAc

We have 0.06 mol NaAc and 0.02 mol HAc

And,

moles of HCl = 0.02 mol

So,

Volume of Hcl = 0.02x1000 = 20

= 20/6.0

= 3.33 Ml

hence, The volume of 6.0 M HCL should be 3.33 ml.

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Answer:

B

Explanation:

its solute state is gas and dissolve in (solvent) liquid which is water

256.73 ft

Convert 7.27 \(m^3\) to\(ft^3\)

as per above , we have to convert \(m^3\) into \(ft^3\)

now:

1 \(m^3\) = 35.31  \(ft^3\)

7.27 \(m^3\) = 35.31 \(\times\) 7.27 \(m^3\)

               = 256.73 ft

meter cubic and feet both are volumetric unit

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Answer:

which property is least helpful in identifying a sample of matter is (B) VOLUME

Explanation:

volume depend on the amount of substance present and are not useful in the identification of a sample of matter. volume is an extensive property so it is not useful identifying the sample of matter.

Answer:

This is true because oxygen belongs to the non-metal part of the periodic table.

Answer:hello

Oxygen is a non-metal it's exactly true.

Explanation:

There's a good rule that if the number of electrons in the last layer is 1,2,3,and sometimes 4 it's a metal but if this number increase it's a non-metal like Oxygen or Nitrogen.

Good luck.

Answer:

The solubility of alkaline earth metal hydroxides in water increases down the group because the size of the metal cation increases as you move down the group. This increase in size results in a decrease in the cation's charge density, which makes it less able to attract and hold onto hydroxide ions. As a result, the hydroxides become more soluble in water as you move down the group. Additionally, the lattice energies of the hydroxides decrease down the group, making it easier to break apart the crystal lattice structure and dissolve the hydroxides in water.

Answer: 0.113 moles of NaCl are created as a result of decomposing 12 grams of \(NaClO_3\).

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)   

\(\text{Moles of} NaClO_3=\frac{12g}{106.5g/mol}=0.113moles\)

The balanced chemical equation for decomposition of \(NaClO_3\) is:

\(2NaClO_3\rightarrow 2NaCl+3O_2\)  

According to stoichiometry :

2 moles of \(NaClO_3\) give = 2 moles of \(NaCl\)

Thus 0.113 moles of \(NaClO_3\) give =\(\frac{2}{2}\times 0.113=0.113moles\)  of \(NaCl\)

Thus 0.113 moles of NaCl are created as a result of decomposing 12 grams of \(NaClO_3\).

Answer:

The ice pack is absorbing heat from your wrist.

Explanation:

The volume of hydrogen gas produced is 19.8 L.

The balanced chemical equation is given as;

Zn + 2HCl → ZnCl₂ + H₂

from the reaction above;

1 mole of Zn = 1 mole of H₂

number of mole of 48.5 g Zn  is calculated as

48.5 g  /65.4 g/mol

= 0.74 mol Zn  = 0.74 mol H₂

The volume of hydrogen gas produced is calculated as follows;

PV = nRT

where;

T = 27°C + 273 = 300 K

V = nRT/P

V = (0.74 x 0.08206 x 300) / (0.921)

V = 19.8 L

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Daria had some beach sand with her. The sand has a 72 gramme mass. She calculated the volume using the graduated cylinder below. The graduated cylinder contains 15 mL of sand.

The volume of the sand is calculated using the graduated cylinder below. The sand's bulk is specified as 72 grammes.

We can use the water displacement method to calculate the volume of the sand. Following is a description of how to estimate the amount of sand using the water displacement method:

The graduated cylinder of water should first be measured for volume.

The graduated cylinder's water volume should then be measured after adding the sand to it. The volume of water increases by the same amount.

Let's use the provided problem to implement this approach.

In the beginning, there is 10 mL of water in the graduated cylinder. The graduated cylinder contains 25 mL of water once the sand has been added.

The amount of sand is therefore equal to the difference between the two volumes, which is: Sand volume equals final water volume minus initial water volume (25 - 10 = 15 mL).

As a result, there are 15 mL of sand in the graduated cylinder.

Answer : 15

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