A sample of calcium oxide having a mass of 12g was treated with 46g of water to prepare calcium hydroxide. The percentage yield for the reaction is 70%. i) Which compound is the limiting reactant? ii) Calculate the theoretical yield of the Ca(OH)2. 111) What is the amount of Ca(OH)2 in the reaction?

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2

Fred is studying a substance that is made out of only one element. this means that