More Mole Conversions
Name:____________________________________
ProblemSetA:CaCl2(Calciumchloride)Calculatemolarmass:Ca=1x40.078=40.078
Cl=2x35.453=70.906+
Total=
Completethesefirst:
1mole=________________molecules
1mole=________________gCaCl2(usemolarmass)
1.Howmanymoleculesarepresentin4.5molesofCaCl2?(2.7x1024moleculesCaCl2)
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2.Howmanymolesarepresentin35.6gofCaCl2?(0.321molesCaCl2)
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3.Howmanygramswould2.70x1024moleculesofCaCl2weigh?(498gCaCl2)
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4.Howmanymoleculesarein18.5gofCaCl2?(1.00x1023moleculesCaCl2)
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ProblemSetB:H2OCalculatemolarmass:H=2x=
O=1x=+
Total=
Completethesefirst:
1mole=________________molecules
1mole=________________gH2O(usemolarmass)
5.Howmanymoleculesarepresentin1.15molesofH2O?(6.92x1023moleculesH2O)
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6.Ifyouhave235gofwater,howmanymolesisthis?(13.0molesH2O)
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7.4.13x1025moleculesofH2Owouldweighhowmuch?(1,240gH2O)
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8.Howmanymoleculesarein27.3gofwater?(9.12x1023moleculesH2O)
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ProblemSetC:MgSO4Calculatemolarmass:
1moleculeMgSO4=__________________atomsoxygen
9.Howmanygramsarepresentin7.9molesofMgSO4?(950gMgSO4)
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10.8.23x1025moleculesofMgSO4shouldweighhowmuch?(16,500gMgSO4)
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11.Howmanymoleculesarein9.6molesofwater?(5.8x1024moleculesMgSO4)
12.Ifyouhave117.4gofMgSO4,howmanymolesisthis?(0.9754molesMgSO4)
13.Howmanyatomsofoxygenarein117.4gofMgSO4?(2.349x1024atomsoxygen)
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