Question

N2(g)+3H2(g)→2NH3(g)
How many grams of H2 are needed to react with 3.50 g of N2?

Answer 1

N2(g) + 3 H2(g) → 2 NH3(g)
Given: 3.50 g N2
Find: g H2
g H2 = (3.50 g N2 x 1 mol N2 )/(28.01g N2) ∙ (3 mol H2)/(1 mol N2) ∙(2,02g H2)/(1 mol H2) = 0. 75 g
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Where are clearly represent chemical dependence between moles molar ratios and mass of reagents and product in chemical reactions