The density of platinum is 23.4 g/cm3 at 20°C. Calculate the mass of 75.0 cm3 of platinum at this temperature.
... and you don't know??
Mass = mass density * volume
where
mass density = 23.4 g/cm³
volume = 75 cm³
how sway
To calculate the mass of platinum, we can use the formula:
Mass = Density * Volume
First, let's convert the given volume from cm3 to m3. Since 1 m = 100 cm, we have:
Volume = 75.0 cm3 * (1 m / 100 cm)3
= 0.000075 m3
Next, we can multiply the density of platinum by the volume to find the mass:
Mass = 23.4 g/cm3 * 0.000075 m3
= 0.001755 g
Therefore, the mass of 75.0 cm3 of platinum at a temperature of 20°C is approximately 0.001755 grams.