Multiple Choice
The mass of an atom of 12C is exactly 12 atomic mass units. Which of the following describes a mole of 12C atoms?
A) a sample that weighs exactly 12 atomic mass units
B) a sample that contains 6.02 × 1023 atoms of 12C
C) a sample that weighs exactly 12 atomic mass units and a sample that contains 6.02 x 1023 atoms of 12C
D) neither a sample that weighs exactly 12 atomic mass units or a sample that contains 6.02 x 1023 atoms of 12C
Correct Answer:
Verified
Correct Answer:
Verified
Q41: How many molecules are present in one
Q42: Given the reaction 2HgO(s) → 2Hg(l) +
Q43: Which of the following is true of
Q44: Which of the following statements is true
Q45: Diethyl ether can be made from ethanol.
Q47: Which of the following is the correct
Q48: The molecular weight of cholesterol is 710
Q49: In the industrial synthesis of acetic acid,
Q50: A person drinks 1.50 × 10<sup>3</sup> g
Q51: How many joules make a kilocalorie?<br>A) 2,184