Final answer:
The volume of copper that weighs 240g with a density of 10.5 g/cm3 is approximately 22.86 cm3. Choice B, 22.8 cm3, is the closest option provided, suggesting a slight rounding difference.
Step-by-step explanation:
To calculate the volume of copper that weighs exactly 240g with a given density of 10.5 g/cm3, we need to use the formula of density, which is density = mass/volume.
By rearranging the formula to solve for volume, we get volume = mass/density. Plugging in the values given, we find the volume by dividing 240g by 10.5 g/cm3, which is:
Volume = 240g / 10.5 g/cm3 = 22.8571428571 cm3
When we round this value to two decimal places, as commonly done in scientific measurements, we get approximately 22.86 cm3, which is not one of the provided choices, but the closest one is choice B, 22.8 cm3, which seems to be slightly rounded.