calculate the number of hydrogen atoms in...

Question

Calculate the number of hydrogen atoms there are in 75.00 grams of C6H14O4

Answer 1

1.  Find molar mass of C6H14O4

C = 6 x 12 = 72

H = 14 x 1 = 14

O = 4 x 16 = 64 

Total = 150 g/mole

 

2.  Determine moles of C₆H₁₄O₄ in 75.00 g

75.00 g x 1 mole/150 g = 0.500 moles

 

3.  Determine number of H atoms in 0.5 moles C₆H₁₄O₄

0.5 moles C₆H₁₄O₄ x 14 moles H/mole C₆H₁₄O₄ x 6.02x10²³ atoms/mole = 4.214x10²⁴ hydrogen atoms