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1 mole of Lithium (Li) is equal to how many atoms of Lithium? 3 Li 6.94 Lithium A. 3 B. 6.941 C. 6.02 x 1023 D. 6.941 x 1023
Weegy: The answer is C. In a mol, you always have Avogadro's number = 6.0221415 × 10^23 (More)
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Asked 9/19/2012 7:30:27 AM
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5.6 moles of gold contain how many atoms? A. 34 atoms B. 9.3 × 10-22 atoms C. 9.3 × 1023 atoms D. 3.4 × 1024 atoms
Weegy: D. 3.4 × 1024 atoms (More)
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Expert Answered
Asked 9/19/2012 7:37:19 AM
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what is the mass of one mole of CaCO3
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Updated 9/19/2012 11:38:37 AM
1 Answer/Comment
Calcium carbonate (CaCO3)
Using theAtomic Masses from the Periodic Table

1 x Ca = 1 x 40 = 40
1 x C = 1 x 12 = 12
3 x O = 3 x 16 = 48

40 + 12 + 48 = 100 (Mr of CaCO3)

moles = mass / Mr
mass = moles x Mr
mass = 1 mole x 100 = 100grams.
Added 9/19/2012 11:38:39 AM
Rated good by ki
what is the mass of one mole of Calcium Carbonate
Question
Updated 9/19/2012 11:28:53 AM
1 Answer/Comment
Calcium carbonate (CaCO3)
Using theAtomic Masses from the Periodic Table

1 x Ca = 1 x 40 = 40
1 x C = 1 x 12 = 12
3 x O = 3 x 16 = 48

40 + 12 + 48 = 100 (Mr of CaCO3)

moles = mass / Mr
mass = moles x Mr
mass = 1 mole x 100 = 100grams.
Added 9/19/2012 11:28:54 AM
Rated good by ki
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