Author Question: The molecular weight of nitrous oxide (N2O), known as laughing gas, is ________ amu (rounded to one ... (Read 59 times)

frankwu · **on:** Aug 27, 2018

The molecular weight of nitrous oxide (N2O), known as laughing gas, is ________ amu (rounded to one decimal place).

A) 60.0
B) 30.0
C) 44.0
D) 3.0
E) 22.0

Question 2

Which of the following assumptions of Dalton's Atomic Theory are no longer valid?

A) Each element is composed of atoms.
B) All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements.
C) Atoms combine in simple, whole-number ratios to form compounds.
D) Atoms of one element cannot change into atoms of another element.