Chem Help....Online class.?

angel

New member
Hello I am taking an online chem class and need help understanding how to do these problems, if you can please help me understand these questions. Thanks for your help.

-How many isomers of CH3-CH2-CH3 can I make?
-If there is a radiation that has a half life of 10 days and we have it for 110 days, what will be the fraction of radiation left?
-Which has more alcohol? 200 mL of 3.2 % vol/vol beer or wine with 7% vol/vol alcohol and a volume of 100 mL?
-What kind of conditions would I want if I wanted to get as much CO2 to go into a soda as I could?
 
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