How many grams of H2 are needed to react with 2.40g of N2?

Question

abb0t · Answer

Write the complete balanced chemical equation first. H$_2$ +N$_2$ $\rightarrow$

anonymous · Answer

N2(g) + 3H2(g) → 2NH3(g)

abb0t · Answer

Yes, now next step is to convert from grams of N$_2$ $\rightarrow$ H$_2$. Do you know dimensional analysis?

abb0t · Answer

Plan: $\sf \color{}{2.40~g~N_2 \rightarrow mol~N_2 \rightarrow mol~H_2 \rightarrow g~of~H_2}$

anonymous · Answer

No, I'm not so good in chemistry that's why I made a account. I've never had chemistry before but I have it as a subject during my education.

abb0t · Answer

Well, that is the plan, I listed above, that you must take. Do you reemmeber from algebra, cancel out the variables? For instance: $\sf \color{red}{\frac{ab}{c^2} \times \frac{1}{a} = \frac{b}{c^2}}$ since the a's cancel out? That's basically what you're doing. Except this time, with units. You have $\sf \color{blue}{2.40~g~N_2 \times\frac{mole~N_2}{mass~of~N_2} \times \frac{3~mol~H_2}{1~mol~H_2}}$. and then continue the same process to find mass.