55 Given the formula for heptanal:
Determine the gram-formula mass of heptanal. [1]
56 Compare the mass of a proton to the mass of an
electron. [1]
Answer-->mass of a proton is
greater than the mass of an electron |
57 In nature, 1.07% of the atoms in a carbon sample are
C-13 atoms. In the space in your answer booklet, show a numerical setup
for calculating the number of C-13 atoms in a sample containing 3.28x10^{24}
atoms of carbon. [1]
Answer--> (0.0107)*3.28x10^{24} |
on to
Questions 58-59 |