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Mole Conversions, Summaries of Chemistry

Troy UniversityChemistry

Problem Set A: CaCl2 (Calcium chloride) Calculate molar mass: Ca = 1 x 40.078 = 40.078. Cl = 2 x 35.453 = 70.906 +. Total = Complete these first:.

Typology: Summaries

2021/2022

Uploaded on 09/12/2022

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More Mole Conversions Name:&____________________________________&
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Problem(Set(A:(CaCl2((Calcium(chloride)((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((Calculate(molar(mass:(Ca&=&1&x&40.078&=&40.078(
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Download Mole Conversions and more Summaries Chemistry in PDF only on Docsity!

More Mole Conversions Name: ____________________________________

Problem Set A: CaCl 2 (Calcium chloride) Calculate molar mass: Ca = 1 x 40.078 = 40. Cl = 2 x 35.453 = 70.906 + Total = Complete these first: 1 mole = ________________ molecules 1 mole = ________________ g CaCl 2 (use molar mass)

  1. How many molecules are present in 4.5 moles of CaCl 2? (2.7 x 10^24 molecules CaCl 2 ) !.! !"#$% !"!"! !

x

!.!"! !"!"^ !"#$%&#$' !"!"! ! !"#$ !"!"!

  1. How many moles are present in 35.6g of CaCl 2? (0.321 moles CaCl 2 ) !".!! !"!"! !

x

! !"#$ !"!"! !!".!"#! !"!"!

  1. How many grams would 2.7 0 x 10^24 molecules of CaCl 2 weigh? ( 498 g CaCl 2 ) !.!! !"!"^ !"#$%&#$' !"!"! !

x

!"#$ !"!"! !"#$%&#$' !"!"!

x

! !"!"! !"#$ !"!"!

  1. How many molecules are in 18.5g of CaCl 2? (1.00 x 10^23 molecules CaCl 2 ) ! !"!"! !

x

!"#$ !"!"! ! !"!"!

x

!"#$%&#$' !"!"! !"#$ !"!"!

Problem Set B: H 2 O Calculate molar mass: H = 2 x = O = 1 x = + Total = Complete these first: 1 mole = ________________ molecules 1 mole = ________________ g H 2 O (use molar mass)

  1. How many molecules are present in 1. 1 5 moles of H 2 O? ( 6. 92 x 10^23 molecules H 2 O) !"#$% !!! !

x

!"#$%&#$' !!!

  1. If you have 235g of water, how many moles is this? (13.0 moles H 2 O) ! !!! !

x

!"#$ !!!

    1. 13 x 10^25 molecules of H 2 O would weigh how much? (1,240 g H 2 O) !"#$%&#$' !!! !

x

!"#$ !!!

x

! !!!

  1. How many molecules are in 27.3g of water? (9.12 x 10^23 molecules H 2 O) !

x x = =