contestada

2 NH3 + 3 CuO --> 3 Cu + N2 + 3 H2O

In the above equation, how many moles of N2 can be made when 113.6 grams of CuO are consumed?

Round your answer to the nearest tenth. If your answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect. :

Element Molar Mass

Hydrogen

1

Nitrogen

14

Copper

63.5

Oxygen

16

Respuesta :

Answer: 0.5 moles of [tex]N_2[/tex] are produced in the reaction

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

Given mass of [tex]CuO[/tex] = 113.6 g

Molar mass of [tex]CuO[/tex] = 79.5 g/mol

Plugging values in equation 1:

[tex]\text{Moles of CuO}=\frac{113.6g}{79.5g/mol}=1.43 mol[/tex]

For the given chemical reaction:

[tex]2NH_3+3CuO\rightarrow 3Cu+N_2+3H_2O[/tex]

By the stoichiometry of the reaction:

If 3 moles of [tex]CuO[/tex] produces 1 mole of [tex]N_2[/tex]

So, 1.43 moles of [tex]CuO[/tex] will produce = [tex]\frac{1}{3}\times 1.43=0.476=0.5mol[/tex] of [tex]N_2[/tex]

Hence, 0.5 moles of [tex]N_2[/tex] are produced in the reaction

Otras preguntas