(a) A sample of carbon tetrachloride, a liquid once used in dry cleaning, has a mass of 39.73 g and a volume of 25.0 mL at 25 'C. What is its density at this temperature? Will carbon tetrachloride float on water? (Materials that are less dense than water will float.) (b) The density of platinum is 21.45 g/cm3 at 20 °C. Calculate the mass of 75.00 cm3 of platinum at this temperature. (c) The density of magnesium is 1.738 g/cm3 at 20 °C. What is the volume of 87.50 g of this metal at this temperature?
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