Asked by Mimi
A sample of lithium sulfate, LiSO4, contains 6.78 x 10^23 formula units.
a) How many moles of Li+ ions are there in the sample?
b) How many moles of ions are there in the sample?
My work:
I think a) is 2.26 moles
And b i am not sure
a) How many moles of Li+ ions are there in the sample?
b) How many moles of ions are there in the sample?
My work:
I think a) is 2.26 moles
And b i am not sure
Answers
Answered by
Damon
Hey, Li has ONE valence electron
I think you mean Li2SO4
6.02 * 10^23 molecules/mol
so we have
6.78/6.02 = 1.13 mols of Li2SO4
which mean
2.26 mols of Li+ ions
then we have 1.13 mols of SO4-- ions
so
2.26 + 1.13 = 3.39 mols of ions in all
I think you mean Li2SO4
6.02 * 10^23 molecules/mol
so we have
6.78/6.02 = 1.13 mols of Li2SO4
which mean
2.26 mols of Li+ ions
then we have 1.13 mols of SO4-- ions
so
2.26 + 1.13 = 3.39 mols of ions in all
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