Question

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.

a) 1 mol of CH4

b) 0.6 mol of C6H6

c) 0.4 mol of C3H8

d) They all contain the same mass of hydrogen.

Answer 1

To determine which substance contains the greatest mass of hydrogen, we need to consider the molar mass and number of moles of hydrogen in each compound. The substance with the greatest mass of hydrogen is 0.6 mol of C6H6.

Step-by-step explanation:

To determine which of the given substances contains the greatest mass of hydrogen, we need to consider the molar mass of each substance and the number of moles of hydrogen in each compound.

The molar mass of CH4 is 16.04 g/mol, and it contains 4 moles of hydrogen. Therefore, 1 mole of CH4 contains 4 moles of hydrogen.

The molar mass of C6H6 is 78.11 g/mol, and it contains 6 moles of hydrogen. Therefore, 0.6 moles of C6H6 contains 6 x 0.6 = 3.6 moles of hydrogen.

The molar mass of C3H8 is 44.1 g/mol, and it contains 8 moles of hydrogen. Therefore, 0.4 moles of C3H8 contains 8 x 0.4 = 3.2 moles of hydrogen.

So, the substance with the greatest mass of hydrogen is 0.6 mol of C6H6.