remember:
A 4.00 mL sample of an unknown substance is known to contain 0.228 mols. Its molar mass is 196.967 g/mol. What is it's density?
Example:
The density of water is 1.00 g/l. Find the volume of water occupied by 1.6 x 1024 molecules of H2O
we will have to convert molecules--->moles---->mass.
A 4.00 mL sample of an unknown substance is known to contain 0.228 mols. Its molar mass is 196.967 g/mol. What is it's density?
we better get a good mark on this, it took a long time.
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