Homework Help: chemistry

Posted by leana on Wednesday, May 19, 2010 at 2:58am.

so i know that one mole is 6.022*10^23 particles in 12g of a carbon 12 isotope. im confused in finding the amount of moles in a particular substane. there is a formula that determines it, i think its n=m/M, yet im confused with what it means..

chemistry - DrBob222, Wednesday, May 19, 2010 at 1:16pm
# moles = grams/molar mass

48 g C. How many moles.
48/12 = 4.0 moles.

70 g Cl2. How many moles?
70/70.9 = ??

536 g AgNO3. How many moles.
536/169.9 = ??

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