What is the density of water if the mass of a glass of water is 45g and the volume is 45mL?
The density of a substance is calculated by dividing its mass by its volume. In this case, the mass of water is 45g and the volume is 45mL. To find the density, we use the formula:
Density = Mass / Volume
Substitute the given values into the formula:
Density = 45g / 45mL
Density = 1g/mL
Therefore, the density of water in this case is 1g/mL.
Understanding Density
Density is a physical property that relates to the amount of matter in a given volume of a substance. It is often used to describe how compact or concentrated a substance is. The formula for density is simple: it is the mass of an object divided by its volume. The units for density are typically mass/volume (e.g., g/mL, kg/L).
When calculating the density of a substance, it is important to ensure that the units of mass and volume are compatible. In the case of water, given the mass of 45g and volume of 45mL, the density is 1g/mL. This means that in every milliliter of water, there is 1 gram of mass.
It is worth noting that the density of water is often used as a reference point because it is readily available and has a density of 1g/mL at standard conditions.
In conclusion, understanding density is crucial in various scientific fields as it helps in characterizing materials and substances based on their mass and volume.