Which of the following statements is incorrect?
A) Molecular mass is expressed in atomic mass units
B) Formula mass compares the mass of one formula unit of a substance to the mass of one atom of carbon-12
C) Atomic mass has units of grams per atom
D) Both molecular mass and formula mass use carbon-12 as a reference standard
E) Sodium chloride, an ionic compound, is said to have a formula weight, but not a molecular weight
Correct Answer:
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Q14: How many moles are in 6.27 ×
Q15: How many atoms are in 0.188 mol
Q16: How many atoms of each element are
Q17: Which of the following statements is/are correct?
A)Because
Q18: Which of the following statements is/are correct?
i.The
Q20: Which of the following statements is/are correct?
i.A
Q21: A certain compound is 66.7% carbon,3.74% hydrogen,and
Q22: Calculate the percentage composition of calcium chlorate.
A)19.4%
Q23: Calculate the percent nitrogen in ammonium nitrate.
A)17.5%
B)21.9%
C)22.9%
D)33.3%
E)35.0%
Q24: From the following,pick those that are empirical
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