Worksheet – Mole calculations Show all your work and box in your ...

Worksheet – Mole calculationsName______________Period_____________Date_______________Show all your work and box in your answers including the units.1) How many moles are in 15 grams of lithium? (2.2 moles lithium)2) How many grams are in 2.4 moles of sulfur? (77 grams sulfur)3) How many molecules are there in 9.34 grams of LiCl? (1.33 x 10 23 molecules LiCl)4) How many moles are in 22 grams of argon? (0.55 moles argon)5) How many grams are there in 7.5 x 10 23 molecules of H 2 SO 4 ? (120 grams H 2 SO 4 )6) How many moles are in 2.3 grams of phosphorus? (0.074 moles phosphorus)7) How many grams are in 11.9 moles of chromium? (619 grams chromium)

8) How many molecules are there in 2.3 grams of NH 4 SO 2 ? (1.7 x 10 22 molecules NH 4 SO 2 )9) How many moles are in 9.8 grams of calcium? (0.24 moles calcium)10) How many grams are in 238 moles of arsenic? (17800 grams arsenic)11) How many grams are there in 3.3 x 10 23 molecules of N 2 I 6 ? (430 grams N 2 l 6 )12) How many molecules are there in 200 grams of CCl 4 ? (8 x 10 23 molecules CCl 4 )13) How many grams are in 0.02 moles of beryllium iodide, BeI 2 ? (5 grams Bel 2 )14) How many grams are there in 1 x 10 24 molecules of BCl 3 ? (200 grams BCl 3 )15) How many grams are there in 4.5 x 10 22 molecules of Ba(NO 2 ) 2 ? (17 grams Ba(NO 2 ) 2 )

16) How many moles are in 3.4 x 10 -7 grams of silicon dioxide, SiO 2 ? (5.7 x 10 -9 moles SiO 2 )17) Determine the number of oxygen atoms present in 25.0 grams of carbon dioxide. (6.84 x 10 23Oxygen Atoms)18) How many grams do 4.3 x 10 21 molecules of UF 6 weigh? (2.5 grams UF 6 )19) How many molecules are there in 230 grams of NH 4 OH? (3.9 x 10 24 molecules NH 4 OH)20) Determine the number of chloride ions in 10.75 grams of magnesium chloride. (1.359 x 10 23Cl - )21) How many moles are in 68 grams of copper (II) hydroxide, Cu(OH) 2 ? (0.70 moles Cu(OH) 2 )22) How many moles are in 1.2 x 10 3 grams of ammonia, NH 3 ? (7.0 x 10 1 grams NH 3 )

23) How many grams are in 2.3 x 10 -4 moles of calcium phosphate, Ca 3 (PO 3 ) 2 ? (0.064 gramsCa 3 (PO 3 ) 2 )24) Calculate the number of sodium ions present in 25.0 grams of sodium chloride. (2.58 x 10 23sodium ions)25) How many grams are in 1.11 moles of manganese sulfate, Mn 3 (SO 4 ) 7 ? (929 gramsMn 3 (SO 4 ) 7 )26) Calculate the moles of aluminum ions present in 250.0 grams of aluminum oxide? (4.904moles Al +3 )

Mole Calculation Worksheet – Answer Key1) How many moles are in 15 grams of lithium? 0.46 moles2) How many grams are in 2.4 moles of sulfur? 77.0 grams3) How many moles are in 22 grams of argon? 0.55 moles4) How many grams are in 88.1 moles of magnesium? 2141 grams5) How many moles are in 2.3 grams of phosphorus? 0.074 moles6) How many grams are in 11.9 moles of chromium? 618.8 grams7) How many moles are in 9.8 grams of calcium? 0.24 moles8) How many grams are in 238 moles of arsenic? 17,826 gramsWhat are the molecular weights of the following compounds?9) NaOH 40.1 grams 12) H 3 PO 4 98.0 grams10) H 2 O 18.0 grams 13) Mn 2 Se 7 663.0 grams11) MgCl 2 95.3 grams 14) (NH 4 ) 2 SO 4 132.1 grams15) How many grams are in 4.5 moles of sodium fluoride, NaF? 189 grams16) How many moles are in 98.3 grams of aluminum hydroxide, Al(OH) 3 ?1.26 moles17) How many grams are in 0.02 moles of beryllium iodide, BeI 2 ? 5.2 grams18) How many moles are in 68 grams of copper (II) hydroxide, Cu(OH) 2 ?0.70 moles19) How many grams are in 3.3 moles of potassium sulfide, K 2 S? 364.0 grams20) How many moles are in 1.2 x 10 3 grams of ammonia, NH 3 ? 70.6 moles21) How many grams are in 2.3 x 10 -4 moles of calcium phosphate, Ca 3 (PO 3 ) 2 ? 0.064 grams22) How many moles are in 3.4 x 10 -7 grams of silicon dioxide, SiO 2 ?5.66 x 10 -9 moles23) How many grams are in 1.11 moles of manganese sulfate, Mn 3 (SO 4 ) 7 ?929.5 grams