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Chemistry 11 Mole Conversion Practice Avogadro’s Number, Molar Mass, Molar Volume Name: Date: Block: 1. How many atoms are in 2 molecules of Hg(IO3)2? 2. What volume at STP is occupied by 1.45 x 10 30 molecules of COF2 gas? 3. How many molecules are there in 64.0 g of FeS? 4. How many moles are in 25.0 mL of HCN at STP? 5. What volume at STP is occupied by 43.5 g of ClF3? 6. How many moles are in 2.75 x 10 23 atoms of Fe? 7. How many molecules are there in 125 mL of NOCl at STP? 1. 18 atoms 2. 5.39x10 7 L 3. 4.38x10 23 molecules 4. 1.12x10 -3 mol 5. 10.5 L 6. 0.457 moles 7. 3.36x10 21 molecules

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  • Chemistry11

    MoleConversionPracticeAvogadro’sNumber,MolarMass,MolarVolume

    Name:Date:Block:

    1. Howmanyatomsarein2moleculesofHg(IO3)2?2. WhatvolumeatSTPisoccupiedby1.45x1030moleculesofCOF2gas?3. Howmanymoleculesaretherein64.0gofFeS?4. Howmanymolesarein25.0mLofHCNatSTP?5. WhatvolumeatSTPisoccupiedby43.5gofClF3?6. Howmanymolesarein2.75x1023atomsofFe?7. Howmanymoleculesaretherein125mLofNOClatSTP?

    1.18atoms2.5.39x107L3.4.38x1023molecules4.1.12x10-3mol5.10.5L6.0.457moles7.3.36x1021molecules

  • Chemistry11

    MolarityPracticeName:Date:Block:

    1. Howmanygramsofmagnesiumcyanideareneededtomake275mLofa0.075Msolution?

    2. Whatisthemolarityofasolutionmadewhen52gramsofpotassiumsulfateisaddedto4100mLofwater?

    3. Findthevolumeofa0.75Msolutionifitcontains39gramsofpotassiumhydroxide.

    4. Howmanygramsofhydrochloricacidarepresentin3.0Lofa0.750Msolution?

    5. Explainhowyouwouldmake675mLofa0.400Mbariumiodidesolution.

    6. 200.0gofNaClaredissolvedin100.mLofwater.Calculatethemolarityofthesolution.

    7. HowmanygramsofAgClarerequiredtoprepare150.0mLof0.200Msolution?

    8. Whatistheconcentrationthatresultswhen184.7gofpotassiumchromateisdissolvedinenoughwatertomakea500.0mLsolution?

    1.1.6g2.0.073M3.0.93L4.82g5.Dissolve106gBaI2in675mLwater6.34.2M7.4.30g8.1.902M


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