The amount of carbon substance formed during the decomposition of 48 g of methane. What is?

The decomposition of methane: CH4 = C + 2H2
Let’s find the molar mass of methane according to the periodic table M = 12 + 1 * 4 = 16 g / mol. Let’s find the amount of methane substance n = m / M = 48 g / 16 g / mol = 3 mol. According to the reaction equation, from 1 mol of methane, 1 mol of carbon is obtained, which means n (CH4) = n (C) = 3 mol. Answer: the amount of carbon is 3 mol.

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