Open Question
A patient needs 100. g of glucose in the next 12 h. How many liters of a 5% (m/v) glucose solution must be given?
9. Solutions
Percent Concentrations
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How many mL of ethanol are contained in a 750.0 mL bottle of wine that contains 11.0% (v/v) of ethanol?
A
1.5 mL
B
68.2 mL
C
82.5 mL
D
11.0 mL
Verified step by step guidance1
Understand that the problem is asking for the volume of ethanol in a wine bottle, given the percentage concentration by volume (v/v).
Recognize that the percentage (v/v) means that there are 11.0 mL of ethanol in every 100 mL of wine.
Set up the proportion based on the given percentage: (11.0 mL ethanol / 100 mL wine) = (x mL ethanol / 750.0 mL wine).
Solve the proportion for x, which represents the volume of ethanol in the 750.0 mL bottle of wine.
Multiply 750.0 mL by 11.0% (or 0.11) to find the volume of ethanol in the bottle.
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