In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products? A. Zn + 2HCl → H2 + ZnCl2 B. Li2CO3 → LiO + CO2 C. CO2 + H2O → CH2OH + O2 D. CH4 + O2 → CO2 + 2H2O

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.