In an ion with an unknown charge, the total mass of all the electrons was determined to be 1.640 x g, the total mass of its protons was 4.015 x g, and the total mass of its neutrons was 4.690 x g. What is the identity, charge, and mass number of this ion? Electron one mass = 9.109 x Proton one mass = 1.673 x Neutron one mass = 1.675 x

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.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons