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What amount of hydrogen(H), in moles, is present in the water (H2O) produced

What Amount Of HydrogenH In Moles Is Present In The Water H2O Produced class=

Sagot :

Explanation:

According to the problem 0.2916 g of water were produced, so we have to find the number of moles of H in that sample of water. First we will convert those grams into moles using the molar mass of water.

molar mass of H = 1.01 g/mol

molar mass of O = 16.00 g/mol

molar mass of H₂O = 2 * 1.01 g/mol + 1 * 16.00 g/mol

molar mass of H₂O = 18.02 g/mol

moles of H₂O = 0.2916 g * 1 mol/(18.02 g)

moles of H₂O = 0.01618 moles

One molecule of H₂O contains two atoms of H. So 1 mol of H₂O molecules will contain 2 moles of H atoms. We can use that relationship to find the answer to our problem.

1 mol of H₂O = 2 moles of H

moles of H = 0.01618 moles of H₂O* 2 moles of H/(1 mol of H₂O)

moles of H = 0.03236 mol

Answer: 0.03236 mol of H atoms are present in the water produced.

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