A chemist weighed out 3.89 g of nickel. What is the number of moles of nickel she weighed out?
She measured out 0.0663 mol of nickel.
For this question, we need to use the Periodic Table to find the molar mass of
The formula for molar mass is
#color(blue)(|bar(ul(color(white)(a/a) "molar mass" = "mass"/"moles"color(white)(a/a)|)))" "#
We can rearrange the formula to read
#"moles" = "mass"/"molar mass"#