Platinum has a density of 23.4g/cm3. What is its mass?
To calculate the mass of an object, you need to multiply its density by its volume. In this case, since you have been given the density of platinum as 23.4g/cm³, you also need to know the volume of the platinum sample to calculate its mass.
If you have the volume of the platinum sample, you can multiply it by the density to get the mass. For example, if the volume is 1 cm³, the mass would be:
Mass = Density x Volume
Mass = 23.4 g/cm³ x 1 cm³
Mass = 23.4 g
Therefore, the mass of the platinum sample would be 23.4 grams.