What is (i) the molar mass of #"lead nitrate"#, and (ii), the molar quantity of a #42.65*g# mass of this material?
2 Answers
We take the quotient,
Explanation:
The molar mass of
And so we gots...
From where did I get these atomic masses? Did I know them off the top of my head? From where will YOU get these masses if asked the question in an exam?
And so with respect to
And how many moles of oxygen atoms are in this sample?
And please note the dimensional consistency of the answer; we wanted an answer with dimensions of moles. Did we get one?
i.e.
(a) & (b) done already, I will do
c) Formula units