Question

I need a tutor for my chemistry homework I can’t understand

Answer 1

1) Write the chemical equation

`N_2+3H_2\rightarrow2NH_3`

2) Convert grams of H2 into moles of H2.

`\text{mol H}_2=7gH_2\cdot(1molH_2)/(2.016gH_2)=3.472molH_2`

3) Moles of N2 needed to react with H2

`\text{mol N}_2=3.472molH_2\cdot(1molN_2)/(3molH_2)=1.157molN_2`

4) Plug values in the frame

1.157 mol N2 is needed in the reaction.