The two most abundant elements in the universe are HYDROGEN AND HELIUM. Hydrogen is the most abundant element followed by helium.
Hydrogen is the lightest of all element and the first element to be formed, followed by helium which has just two atoms.
8 H2= 0.90 g , hope that helps
you with your work
The answer is (4) amino acid. This molecule has one carboxyl and one amidogen linked at the same carbon atom. This is the property of amino acid. So this is an amino acid.
This is Bohrs model for potassium
Mass is the amount of matter in an object. Density is the degree of compactness of a substance
