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3 years ago

What is the theoretical yield of ammonia that can be obtained from the reaction of 17.1 g of H2 and excess N2?

1 answer:

6 0

The theoretical yield is the yield after a certain reaction occurs. So if you are given 17.1 g of H2 and an excess of N2, you should know the balanced equation.

N2 + 3H2 → 2NH3

Molar mass of H2 = 2.02 g/mol

Molar mass of NH3 = 17 g/mol

(17.1 g of H2)(1 mol H2/2.02g H2)(2 mol NH3/3mol H2)(17g NH3/1mol NH3) = 95.94g NH3

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Number of molecules of baking soda

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Answer:

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2 years ago

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For a particular reaction, Δ=−111.4 kJ and Δ=−25.0 J/K.

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Answer:

$\Delta G =-103.95kJ$

Explanation:

Hello there!

In this case, since the thermodynamic definition of the Gibbs free energy for a change process is:

$\Delta G =\Delta H-T\Delta S$

It is possible to plug in the given H, T and S with consistent units, to obtain the correct G as shown below:

$\Delta G =-111.4kJ-(298K)(-25.0\frac{J}{K}*\frac{1kJ}{1000J} )\\\\\Delta G =-103.95kJ$

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3 years ago

1. How many moles of hydrogen are needed to completely react with two moles of nitrogen?

Arlecino [84]

N2 + 3H2 --> 2NH3

Answer: 6 moles of hydrogen are needed to react with two moles of nitrogen.

Explanation:

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2 years ago

The maximum number of trees that can be grown in an area and have all of the resources they need to survive is the forest's ____

alisha [4.7K]

Answer:

growth limit for trees

Explanation:

the awnser is the growth limit for trees

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2 years ago

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A buffer solution is composed of 7.50 mol of acid and 4.75 mol of the conjugate base. If the pKa of the acid is 4.90 , what is t

Mamont248 [21]

Answer:

The correct answer is: pH= 4.70

Explanation:

We use the <em>Henderson-Hasselbach equation</em> in order to calculate the pH of a buffer solution:

$pH= pKa + log \frac{ [conjugate base]}{[acid]}$

Given:

pKa= 4.90

[conjugate base]= 4.75 mol

[acid]= 7.50 mol

We calculate pH as follows:

pH = 4.90 + log (4.75 mol/7.50 mol) = 4.90 + (-0.20) = 4.70

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3 years ago