50 points pls help me asap!!!!
1. How many grams of 0.5% propanoic acid CH3CH2COOH solution is required to dissolve 6 grams of hydroxyapatite?
2. Calculate mass of SiO2 contained in 2 g of high-fusing porcelain.
3. How many grams of sulphate dihydrate must be heated to get 10 grams of sulphate hemihydrates?
