Calculate the mass of water you need to take to get 160g of oxygen.
| January 24, 2021 | education
2H2O -> 2H2 + O2
Let’s calculate the chemical amount of oxygen: n = m / M
n (O2) = 160 / (16 * 2) = 160/32 = 5 mol.
Let’s write out the chemical quantities and coefficients from the reaction:
x mol – 5 mol, therefore n (O2) = x = 2 * 5/1 = 10 mol.
2 mol – 1 mol
Calculate the mass of water required: m = n * M
m (H2O) = 10 * (1 * 2 + 16) = 180 gr.
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