A student is performing an experiment to find the density of water. She obtains a 100ml beaker, which weighs 53.257 grams, and she fills it with 60 mL of water. The temperature of the water is 25.5 degrees celsius (room temperature). Again the student takes the weight of the beaker with water and and finds that the beaker now weighs 109.067 grams. Find the density of the water.
mass H2O = last weighing - first weighing
volume = 60 mL
density = mass/volume
To find the density of water, we will use the formula:
Density = mass / volume
First, we need to find the mass of the water. To do this, we subtract the weight of the empty beaker from the weight of the beaker with water:
Mass of water = Weight of beaker with water - Weight of empty beaker
In this case, the weight of the beaker with water is 109.067 grams, and the weight of the empty beaker is 53.257 grams:
Mass of water = 109.067 g - 53.257 g
Mass of water = 55.81 g
Now, we need to find the volume of the water. In this case, the student filled the beaker with 60 mL of water, so the volume is 60 mL.
Now we can use the formula:
Density = mass / volume
Density = 55.81 g / 60 mL
However, we need to convert the volume to grams, since the units need to be the same:
1 mL of water is equal to 1 gram of water.
So, the density of water is:
Density = 55.81 g / 60 g
Density ≈ 0.9318 g/mL
Therefore, the density of water is approximately 0.9318 g/mL.