Calcium chloride contains only one calcium and 2 chloride atom thus it's ionic formula would be CaCl2.
Steel is an alloy and consists of more than one element (mainly iron and carbon), therefore steel is a mixture.
coefficient: they balance the chemical equation you have to make sure the number is as small as it can. It is also used to convert different compounds to compounds or quantities to quantities.
1. True 2. False 3.false 4. False 5. True
The molar mass<span> is the </span>mass<span> of a chemical element or a chemical compound (g) divided by the amount of substance (mol).
Hope this helps!</span>
