2H2 + O2 + 2H20 If you have 50 grams of hydrogen (H2), how many moles of water (H20) could be

produced?

Hello

The answer is 25gr H2O

Explanation:

50grH2×1 molH2/2 gr H2×2mol H2O/2molH2=25gr H2O

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

the volume increases