AN EMPTY DENSITY BOTTLE WEIGHS 25GRAMS. IT WEIGHS 65GRAMS WHEN FILL WITH WATER. CALCULATE THE DENSITY OF THE LIQUID.

75 g - 30 g

= 45
Mass of water= 45 g

65 g - 30 g
= 35

Mass of liquid x = 35

Density = mass/volume
= 35/45
= 0.77 cm cube

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"Density bottle" is also called a specific gravity bottle, or pycnometer, which has a known capacity.
They come in different capacities. Common capacities are 2, 5, 10, 25, 50 ml.

The question does not specify the capacity, so an assumption is required. Assuming a 25 ml. capacity, then
net volume = 25 ml
net mass = 65-25 g = 40 g
Density = 40/25 g/ml = 1.6 g/ml
Note that the calculated density might change when the real capacity of the bottle is known.

yes

To calculate the density of the liquid, we need to use the formula:

Density = Mass / Volume

In this case, we know that the mass of the empty density bottle is 25 grams, and when filled with water, it weighs 65 grams.

First, we need to determine the mass of the liquid. Since the difference in weight between the filled and empty bottle is due to the water inside, we can calculate the mass of the liquid by subtracting the mass of the empty bottle from the mass of the filled bottle:

Mass of liquid = Mass of filled bottle - Mass of empty bottle
Mass of liquid = 65 grams - 25 grams
Mass of liquid = 40 grams

Next, we need to find the volume of the liquid. Since the density bottle is designed to have a known volume, we can assume that the volume of the liquid is equal to the volume of the density bottle, which we can measure or look up.

Let's say the volume of the density bottle (and hence the liquid) is 50 ml (milliliters), which is equivalent to 50 cm³ (cubic centimeters).

Now we can calculate the density using the formula:

Density = Mass of liquid / Volume of liquid
Density = 40 grams / 50 cm³
Density = 0.8 g/cm³

Therefore, the density of the liquid is 0.8 grams per cubic centimeter (g/cm³).