Nitrogen has three isotopes: nitrogen-13, nitrogen-14, and nitrogen-15. Which of the three isotopes is more abundant given that the atomic mass of nitrogen is 14.007
amu? Justify your answer.

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Newtons second law deals most cosely with

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.