Can you explain how you got the answer?
2006-10-26 16:05:57 · 3 answers · asked by Lightning 1 in Science & Mathematics ➔ Chemistry
The atomic mass of sodium is 22.98977 amu which means there are 22.98977 grams of sodium in a mole. We take the given amount of sodium and divide by this and we get 4.65 mol.
107 g Na
_________ = 4.65 mol
22.98977 g/mol
Beware of significant digits. Since you do not have any decimal places in the given amount of sodium, it can be argued that the amu of sodium cannot be more precise. Some teachers will want to se 23 g/mol written instead of 22.98977 g/mol in this case. However, it will give the same result either way. I guess it depends on if your teacher is having you use significant digits.
2006-10-26 16:22:11 · answer #1 · answered by A.Mercer 7 · 0⤊ 0⤋
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2016-05-15 21:22:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Read the Magnesium answer.
2006-10-26 16:27:29 · answer #3 · answered by Anonymous · 0⤊ 0⤋