Having obtained the voume of the flask, she emptied the flask, dried it and filled it with an unknown whose density she wished to determine. The mass of the stoppered flask when completely filled with liquid was 56.796g. Find the density of the liquid.
hard to say, unless we know the volume of the flask and the mass of the empty flask.
The density of the liquid is probably a lot less if it's in a 2000ml, 50g flask than if it fills a 50ml, 13g flask.
To find the density of the liquid, we need to know the mass and volume of the liquid.
Given: The mass of the stoppered flask when completely filled with liquid is 56.796g.
To determine the volume of the liquid, we need to subtract the mass of the empty flask from the mass of the filled flask.
To measure the mass of the empty flask, she would have followed these steps:
1. Obtain an accurate balance.
2. Place the empty flask on the balance and record the mass.
Assuming she obtained the mass of the empty flask before filling it up, let's say the mass of the empty flask is 40g.
To find the mass of the liquid, we subtract the mass of the empty flask from the mass of the filled flask:
Mass of the liquid = Mass of filled flask - Mass of empty flask
Mass of the liquid = 56.796g - 40g
Mass of the liquid = 16.796g
Now that we know the mass of the liquid, we can calculate the density.
Density is defined as the mass of a substance divided by its volume. Therefore, the formula for density is:
Density = Mass / Volume
Since we have the mass of the liquid (16.796g), we need to find the volume of the liquid.
Given: We obtained the volume of the flask.
Assuming she obtained the volume of the flask before filling it up, let's say the volume of the flask is 25mL (or 25cm^3).
Now we can substitute the values into the formula to find the density:
Density = Mass / Volume
Density = 16.796g / 25mL (or cm^3)
However, since density is usually expressed in units of g/mL or g/cm^3, we need to convert mL to cm^3.
1 mL is equal to 1 cm^3, so we can just rewrite the expression as:
Density = 16.796g / 25cm^3
Calculating the density:
Density ≈ 0.67184 g/cm^3
Therefore, the density of the liquid is approximately 0.67184 g/cm^3.