A chemist requires 0.635 mol Na2CO3 for a reaction. How many grams does this correspond to?

The rules of engagement (roe) working group is often used to (select all that apply.)

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³

If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)