Mole Concept Qualifier

Name_______________________________

Chemistry I-Honors

Complete the following questions. Show all work or no credit will be given.

Explain the reasoning behind why you wrote what formula for which name-box this so I can see it.

1._______________________

33.4 liters of carbon monoxide gas at STP contains how many

molecules of this gas?

2.________________________

How many cations are in 11.0 milligrams of copper(II) arsenate?

3.________________ What is the number of moles of oxygen atoms that can be released from 49.0 grams of

carbonic acid?

4a._________________ If there are 2.445 grams of chlorine present in iron (II) perchlorate tetrahydrate, how

many water molecules are also present in this same sample?

4b._________________ Using the same information in the previous question, how many oxygen atoms are

present in the sample?

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