Calculate the mass of limestone () that must be decomposed to produce 425 g of lime (). The equation for the reaction is CaCo3(s)->CaO(s)+CO2(g)

Alum is a compound used in a variety of applications including cosmetics, water purification, and as a food additive. It can be synthesized from aluminum metal, sulfuric acid, water, and potassium hydroxide, as seen in the following equation. Using the data below, determine the theoretical and percent yield for this alumn synthesis. Note that aluminum is the limiting teactant. 2 Al(s) + 2 KOH(aq) + 4 H, SO̟(aq) + 10 H,O(1) → 2 KAI(SO,), · 12 H,0(s) + 3 H,(g) Mass Trial Data Bottle mass (g) 10.1604 Bottle with aluminum pieces (g) 10.2989 Final product and bottle mass (gj 12.492 1 4 PAGES DEC 280 3D F10 F9 F8 F7 F6

Balance the equation: Cu(s) + H2S(g) + O2(g) → Cu2S(s) + H2O(l)

Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation. Be sure the equation you submit is balanced. (You can edit both sides of the equation to balance it, if you need to.) Note: you are writing the molecular, and not the net ionic equation. →KClO2(aq)+H2O(l)