My dad left
calcium carbonate
CaC03
I assume you meant calcium carbonate, CaCO3, since "cac03" makes no sense. It's chalk. You can eat it if you want (it's not actually poisonous), but it's going to be hard to chew, and in significant quantities it's not going to be good for you.
yes, calcium (Ca), Carbon (C) and Oxygen (O)
The equation for the reaction is H2SO4 + CaC03 = CO2 + H2O + CaSO4.
The equation CaCO3 -> CaO + CO2 is an example of a decomposition reaction.
Carbon dioxide(CO2) + Lime Water[Ca(OH)2] → Calcium Carbonate(CaC03) + Water(H2O)
There are 7 atoms: 1 calcium, 2 carbon, and 4 oxygen.
Scum is created when calcium ions (and or magnesium ions) form an insoluble precipitate with soap. Soap consists of sodium salts of fatty acids. e.g. sodium stearate (aq) + calcium ions (aq) = calcium stearate (s) + sodium ions (aq) Scum is the calcium stearate. Limescale is created when hard water i heated, or when it evaporates. It is formed because calcium hydrogen carbonate is unstable. Ca(HCO3)2 (aq) + heat = Cac03 (s) +H20 (l) +CO2 (g) calcium hydrogen carbonate + heat = calcium carbonate + water + carbon dioxide
metal oxide and carbon dioxide Na2CO3(s) + heat -----> Na2O(s) + CO2(g) [not decomposed in normal conditions as Na2CO3 is very stable] MgCO3(s) + heat -----> MgO(s) + CO2(g) CoCO3(s) + heat -----> CoO(s) + CO2(g) CuCO3(s) + heat -----> CuO(s) + CO2(g) these are some examples from which you can get help.