The molecular formula of sodium oxide is Na2O.
To find the number of moles of sodium oxide, use the formula:
n = m / M
Let’s calculate the molar mass of sodium oxide:
M (Na2O) = 2 * Na + 1 * O = 2 * 23 g / mol + 1 * 16 g / mol = 62 g / mol.
n (Na2O) = m (Na2O) / M (Na2O) = 50 g / 62 g / mol = 0.806 mol.
Answer: 0.806 mol.
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