Homework Help: chemistry

Posted by Mely on Sunday, September 19, 2010 at 10:27am.

Calculate the mass in g of each of the following.

a. 2.3×10^22 H2O molecules

b. 6.16×10^20 SO3 molecules

c. 5.0×1025 O3 molecules

d. 9.82×1019 CCl2F2 molecules

chemistry - DrBob222, Sunday, September 19, 2010 at 3:19pm
2.3 x 10^22/6.022 x 10^23 = ?? moles H2O.
g = mols x molar mass.

Same process for the others.

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