Question

How many liters of a 5.5 % ( m/v ) glucose solution would you need to obtain 65 g of glucose? Express your answer using two significant figures.

Answer 1

Step 1

It is known that "x" % (m/v) means:

x grams of solute in 100 mL of solution

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Step 2

Information provided:

5.5 % (m/v)

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Step 3

Procedure:

5.5 % (m/v):

5.5 g of glucose ----- 100 mL of solution

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Now,

5.5 g of glucose ------------ 100 mL of solution

65 g of glucose ------------- X

X = 65 g of glucose x 100 mL of solution/5.5 g of glucose

X = 1182 mL

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1 L = 1000 mL => 1182 mL x (1 L/1000 mL) = 1.182 L = 1.2 L

Answer: 1.2 L