Molar Mass and Mole Calculations Practice：摩尔质量和摩尔计算实践

Molar Mass and Mole Calculations Practice：摩尔质量和摩尔计算实践 Molar Mass and Mole Calculations Practice Find the molar masses of the following compounds: 1) Ca(OH) 2 74.1 g/mol 2) NaPO 34 164.0 g/mol 3) AgF 126.9 g/mol 4) Fe(PO) 342 357.4 g/mol 5) Zn(CHO) 2322 183.4 g/mol Answer the following questions: 1) How many moles are in 25 grams of water? 1.39 moles 2) How many grams are in 4.5 moles of LiO? 2 134.1 grams 3) How many grams does 0.500 moles of CuBr weigh? 31.8 grams 214) How many moles of sodium atoms correspond to 1.56x10 atoms of sodium? ,32.59x10mol Na atoms 5) Determine the mass in grams of each of the following: a. 1.35 mol Fe b. 24.5 mol O c. 0.876 mol Ca d. 1.25 mol Ca(PO) 342 e. 0.625 mol Fe(NO) 33 f. 0.600 mol CH 410 g. 1.45 mol (NH)CO 423 a. 75.4g Fe b. 392g O c. 35.1g Ca d. 388g Ca(PO) 342 e. 151g Fe(NO) f. 34.9g CH g. 139g (NH)CO32410423 6) Calculate the number of moles of each compound: a. 21.5 g CaCO 3 b. 1.56 g NH 3 c. 16.8 g Sr(NO) 32 d. 6.98 ,g NaCrO 24 ,a. 0.215mol b. 0.0916mol c. 0.0794mol d. 4.31x108mol