Tap water and rain water are both homogeneous, even though they may have different levels of dissolved minerals and gases. A bottle of alcohol is a man-made homogeneous mixture, from a fine Italian wine to a glass of Scotch whisky. In the human body, blood plasma is an example of a homogeneous mixture.
Answer:
The rate reduces by a factor cf /2.
Density = mass / volume
D = 550 / 25
D = 22 g/mL
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