Physics 2009 JAMB Past Questions - Question 19: At 4°C,the volume of a fixed mass of water is

Correct Answer

C

Explanation

At 4°C (39.2°F), water reaches its maximum density. This means that for a fixed mass of water, its volume is at a minimum. The density of water at this temperature is approximately 1 gram per cubic centimeter (g/cm³) or 1000 kilograms per cubic meter (kg/m³).

So, if you have a fixed mass of water at 4°C, the volume will be determined by the density, which is about 1 g/cm³ or 1000 kg/m³, depending on the units you're using. If you provide the mass in grams or kilograms, you can simply use the density to calculate the volume using the formula:

Volume (in cubic centimeters, cm³) = Mass (in grams, g) / Density (in g/cm³)

or

Volume (in cubic meters, m³) = Mass (in kilograms, kg) / Density (in kg/m³)

For example, if you have 1000 grams (1 kilogram) of water at 4°C, the volume would be 1000 cm³ (1 liter) or 0.001 m³.