Give a reason 4. Excess magnesium ribbon sample was heated in qual volumes of (1) Pure oxygen gas (ii) Air (a) Why was the mass of the resulting product in () more than in a (b) Write the equations for the reactions in part(ii)​

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

Ill give u brainliest pls how is mass of carbon conserved during cellular respiration

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus. b) the number of neutrons it contains in its nucleus. c) the number of protons it has in a cloud around the nucleus. d) the number of neutrons it has in a cloud around the nucleus. e) the number of electrons it exchanges with its neighbors.