Determine the mass percent H in NH₄Cl.

Question

Quizplus · Accepted Answer

To determine the mass percent of H, we need to find the mass of H in the compound and divide it by the total mass of the compound, then multiply by 100. Since there are no subscripts for H in the formula, we can assume there is only one H atom in the compound.

Mass of one H atom = 1.01 g/mol

Total mass of compound = (1xN) + (1xH) + (1xS) + (14xU) + (1xCl) 
= 14.01 + 1.01 + 32.06 + (14 x 238.03) + 35.45 
= 3380.6 g/mol

Mass percent of H = [1.01 g/mol / 3380.6 g/mol] x 100% 
= 0.0299%

Therefore, the closest answer choice is C) 7.5%.

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Determine the Mass Percent H in NH₄Cl