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ALL QUESTIONS MUST BE ANSWERED 1

ALL QUESTIONS MUST BE ANSWERED 
18. How many kilograms are in 4.6 pounds? 

Show your work.

19. How many mL are in 3.0 gallons?  Show your work. 

20. Write the name and chemical formula of the following compound containing Magnesium and Bromine?. Write the name and charge of the cation. Write the name and charge of the anion 

 
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