A chermist weighs out 400.0 g of Ca How many moles of Ca is this?

Explanation:

To find out the number of moles we use the formula

where

n is the number of moles

M is the molar mass

m is the mass of the substance

From the question

m = 400 g

M of Ca = 40 g/mol

We have

We have the final answer as

Hope this helps you

answer; natural resources;