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7)Write the chemical formulas for the following compounds:

a)ammonium nitrate __________________________________

b)fluorine __________________________________

c)boron trichloride __________________________________

d)iron (III) phosphate __________________________________

e)nitric acid __________________________________

f)potassium carbonate __________________________________

g)dinitrogen tetrachloride __________________________________

8)How many grams of methane are there in 1.23 x 1024 molecules?

9)How many grams of carbon dioxide will be made when 100 grams of methane burn in an excess of oxygen?

10)If 45 grams of carbon dioxide were actually formed from the reaction in problem #9, what is the percent yield of this reaction?

11)Name the intermolecular force most important for each of the following compounds:

a)ammonia __________________________________

b)boron trichloride __________________________________

c)hydrogen fluoride __________________________________

For chemistry help, visit www.chemfiesta.com© 2002 Cavalcade Publishing, All Rights Reserved

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