Answer With Solution,

Answer with solution

 

Answer:

13. 35mL

14. 4.0 g of copper

Step-by-step explanation:

13.  50 mL of the bottle is 70% alcohol. The question implies that we must get the 70% of the 50 mL because it is the amount of ethyl alcohol present in the bottle.

To get the 70% of 50mL, first you must convert 70% to decimal, which makes it 0.7 then multiply it to 50mL

50mL x 0.7 = 35mL

Final answer: There are 35 mL of ethyl alcohol in the 50 mL bottle.

14. Treat this problem similar to  number 13.

Get the 75% of 5.5 grams of the one peso coin.

Convert the 75% to decimal --> 0.75

Multiply to 5.5 grams

5.5 grams x 0.75 = 4.125 grams or approximately 4.0 grams copper (rounded of in two decimal places)

Final Answer: There are 4.0 grams of copper in one peso coin.


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