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Chapter 3: Q.24E (page 129)

Determine which of the following contains the greatest mass of hydrogen: 1 mol of CH4, 0.6 mol of C6H6, or 0.4 mol of C3H8.

Short Answer

Expert verified

CH4 contains the greatest mass that is 4 g of H.

Step by step solution

01

Determine number of moles and mass of hydrogen in each compound

1 mol of CH4

0.6 mol C6H6

0.4 mol of C3H8

Number of mole H in CH4 = 1 mol of CH4 x 4 = 4 mol of H

Mass of H in CH4 =4 mol H x 1 g/mol = 4 g

Number of mole H in C6H6 = 0.6 mol C6H6 x 6 = 3.6 mol of H

Mass of H in CH4 = 3.6 mol x 1 g/mol = 3.6 g

Number of mole H in C3H8 = 0.4 mol of CH4 x 8 = 3.2 mol of H

Mass of H in CH4 = 3.2 mol H x 1 g/mol = 3.2 g

02

Determine greatest mass

Mass of H

4 g in CH4

3.6 g in C6H6

3.2 g in C3H8

From the above results it is clear that greatest mass of H is present in CH4.

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