True/False: Paraffin wax (d = 0.910 g/cm3) would float in ethanol (d = .789 kg/L).
True.
To determine if an object will float or sink in a liquid, we compare the densities of the object and the liquid. If the density of the object is less than the density of the liquid, then the object will float.
In this case, we need to compare the density of paraffin wax (0.910 g/cm3) with the density of ethanol (0.789 kg/L).
Since the density of paraffin wax is given in g/cm3 and the density of ethanol is given in kg/L, we need to convert the units for accurate comparison.
1 kg/L = 1000 g/ (1000 cm3) = 1 g/cm3.
Therefore, the density of ethanol is also 0.789 g/cm3.
Comparing the densities, we see that the density of paraffin wax (0.910 g/cm3) is greater than the density of ethanol (0.789 g/cm3).
Since the density of the paraffin wax is greater than the density of ethanol, the paraffin wax would sink in ethanol and not float. Therefore, the statement is False, not True.