Draw a wave with a wavelength of six units

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

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.

Calculate the number of molecules present in 0.750 mol of mgo.