6. How many grams are in 3.45 x1022 molecules of Na2CO3?
7. How many moles are in 26.88g of KCI?
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9. How many grams are in 8.64x1025 molecules of KCI?
10. How many moles are in 3.45 g of Pb(Cr2O7) ?
11. How many molecules are in 0.00487 g of KCI?
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6. How many grams are in 3.45 x1022 molecules of Na2CO3?
7. How many moles are in 26.88g of KCI?
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