How many units of MgSO4 are present in 18.0g of this compound? units as in mass? molecules? or atoms?

Question

abb0t · Answer

Use dimensional analysis to convert to moles. This can be see by the relationship on the periodic table - molar mass. Which means their units  are: $\frac{ g }{ mol }$. Then, similar to how you did in algebra, cancel units. Then use avogadro's number to convert to molecules/ atoms: $6.022 \times 10^{23} \frac{ molecules/atoms }{ mol }$

anonymous · Answer

so by the word "units" it's asking for grams?

abb0t · Answer

Yes. Units is some type of measurement.

anonymous · Answer

9.00 x 10^22?