Question

Question 47

4 pts
Dimensional analysis & conversions. If you need scientific notation in you answer, copy this for the
exponential part: "x10^". An example would be 6.022x10^23 for Avogadro's number.
Your answers need to have the correct number of significant figures.
How many grams of hydrogen are in 10.45 moles of C&Hg? (The molar mass is not
needed for this problem.)

Answer 1

84.27 g

Step-by-step explanation:

How many grams of hydrogen are in 10.45 moles of C₃H₈?

Step 1: Calculate the moles of atoms of hydrogen

The molar ratio of C₃H₈ to H is 1:8.

10.45 mol C₃H₈ × 8 mol H/ 1mol C₃H₈ = 83.60 mol H

Step 2: Calculate the mass corresponding to 83.60 moles of hydrogen

The molar mass of hydrogen is 1.008 g/mol.

83.60 mol × 1.008 g/mol = 84.27 g