What is true of the total mass of reactants compared to the total mass of proucts

Why should the mole to mole ratio be a whole number ratio?

List some similarities and differences between the golf ball and the table-tennis ball in the photo.

Your teacher gives you a black powder. When you dissolve the powder in water, you see red particles that float to the top, black particles that sink to the bottom, and a green liquid.

Balance these scientific equations: MgO + HB - > MgBr2 + H2O N2 + O2 - > N2O5 C2H4 + O2 - > CO2 + H2O Fe + HCI - > FeCl2 + H2

How many atoms are in hydrogen nitrate?

Does the buckminsterfullerene conduct electricity?

If an element has 2 valence electrons, how many dots will be in the elements dot diagram?

the state of water is determined solely by the conditions of: A) volume and mass B) temperature and volume C) pressure and mass D) pressure and temperature

When a chemical reaction and its reverse are occurring at the same time and at the same rate, the reaction has achieved a. displacement. c. imbalance. b. equilibrium. d. decomposition.

A certain shade of blue has a frequency of 7.04 * 1014 Hz. What is the energy of exactly one photon of this light?