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3 years ago

The heat exchange in chemical reactions is due to change in

Chemistry

2 answers:

oksian1 [2.3K]3 years ago

8 0

The heat exchange in chemical reactions is due to change in enthalpy.

kirza4 [7]3 years ago

5 0

The enthalpy is the heat added to or lost in a system.

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Nitric acid is often manufactured from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming of natural

hoa [83]

Answer: The net chemical equation is given below.

Explanation:

To determine the net chemical equation, we will look into the intermediate steps:

Step 1: Formation of ammonia from hydrogen and nitrogen gas.

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$ ......(1)

Step 2: Formation of nitric acid from ammonia and oxygen gas.

$NH_3(g)+2O_2(g)\rightarrow HNO_3(g)+H_2O(g)$ .....(2)

The net chemical equation for the formation of nitric acid from hydrogen gas, nitrogen gas and oxygen gas follows by adding both the equations, we get:

$N_2(g)+2O_2(g)+3H_2(g)\rightarrow HNO_3(g)+H_2O(g)+NH_3(g)$

By Stoichiometry of the reaction:

1 mole of hydrogen gas reacts with 2 moles of oxygen gas and 3 moles of hydrogen gas to produce 1 mole of nitric acid, 1 mole of water and 1 mole of ammonia.

Hence, the net chemical equation is given below.

4 0

3 years ago

Helium gas has a molar mass of 4 g/mol. oxygen gas has a molar mass of 32 g/mol. how much faster or slower would helium effuse t

Ira Lisetskai [31]

According to Graham's Law of Diffusion,"the rates of diffusion of two gases are inversely proportional to the square root of their Molar masses or Densities at the same pressure and temperature".

r₁ / r₂ =   $\sqrt{M2 / M1}$
Where,
r₁ = Rate of Helium

r₂ = Rate of Oxygen

M₂ = Molar mass of Oxygen = 32 g/mol

M₁ = Molar mass of Fluorine = 4 g/mol

Putting values,

r₁ / r₂ =   $\sqrt{32 / 4}$

r₁ / r₂ =   $\sqrt{8}$

r₁ / r₂ = 2.82
Result:
Helium gas effuses 2.82 times faster than Oxygen gas.

4 0

3 years ago

Which of the following statements about Ideal Gas Law is supported by Charles's Law?

grin007 [14]

Answer:

Explanation:

volume occupied by fixed amount of gas is directly proportional to its absolute temperature.

5 0

3 years ago

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What describes a property of matter ability to change into different substances

Brilliant_brown [7]

Answer:

Chemical reaction

Explanation:

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3 years ago

If the ribosomes of a cell were destroyed what effect would this most likely have on the cell

Serjik [45]

Cells will not able to produce proteins by translation as it's happens in ribosomes

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3 years ago