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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)
Question
Expert Answered
Asked 9/19/2012 7:30:27 AM
0 Answers/Comments
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)
Question
Expert Answered
Asked 9/19/2012 7:37:19 AM
0 Answers/Comments
One of the many powers given to Congress by the U.S. Constitution is the power to A. lay and collect taxes. B. nominate federal judges. C. pardon criminals for federal crimes. D. appoint heads of executive departments.
Question
Not Answered
Updated 5/12/2015 2:28:45 AM
1 Answer/Comment
One of the many powers given to Congress by the U.S. Constitution is the power to: lay and collect taxes.
Added 5/12/2015 2:28:45 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Andrew. [5/12/2015 2:40:29 AM]
what is the mass of one mole of CaCO3
Question
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
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