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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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Asked 9/19/2012 7:37:19 AM
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The rivers in the New England colonies were fast-moving and shallow. In contrast, how did the larger rivers of the Mid-Atlantic colonies contribute to the development of farming in the area? A. Rivers were diverted and used to irrigate crops. B. River floods provided rich soil for growing crops. C. Rivers were used to transport agricultural products. D. Rivers were dammed to provide power for grain mills.
Weegy: A. Rivers were diverted and used to irrigate crops (More)
Question
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Updated 9/19/2012 11:52:36 AM
2 Answers/Comments
A. Rivers were diverted and used to irrigate crops.
Added 9/19/2012 11:44:58 AM
ki, you have been told several times not to post duplicate answers and restate your responses. You seem to ignore all my warnings. You might want to read the Rules here, we do not tolerate stubborn experts here.
Added 9/19/2012 11:52:36 AM
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
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