The following results were obtained from an experiment to determine the density of air given that mass of a bottle contained air is equal to 410g, mass of a bottle filled with water is equal to 1150g, mass of the empty bottle is equal to 409g,

a) what mass of water was needed to fill the bottle?
b) what was the internal volume of the bottle, take the density of water as 1g/cm^
c) what mass of air filled the bottle?
What was the density of the air?
d) calculate the relative density of air.

Please people I need the answers...

Let me examine your work first.

What mass of water was needed to full the bottle

D =1.2386

To find the answers to these questions, we'll need to use some basic formulas and principles of density.

a) To find the mass of water needed to fill the bottle, subtract the mass of the empty bottle from the mass of the bottle filled with water:
Mass of water = Mass of bottle filled with water - Mass of empty bottle = 1150g - 409g = 741g

b) To find the internal volume of the bottle, we can use the formula for density:
Density = Mass / Volume

Since we know the density of water is 1g/cm^3, we can rearrange the formula to solve for Volume:
Volume = Mass / Density

Volume = 741g / (1g/cm^3) = 741 cm^3

c) To find the mass of air that filled the bottle, subtract the mass of the empty bottle from the mass of the bottle containing air:
Mass of air = Mass of bottle containing air - Mass of empty bottle = 410g - 409g = 1g

d) The density of air can be calculated using the formula:

Density = Mass / Volume

We've already calculated the mass of air as 1g, and to find the volume of air, we need to subtract the volume of water (found in part b) from the internal volume of the bottle:

Volume of air = Internal volume of the bottle - Volume of water = 741 cm^3 - 741 cm^3 = 0 cm^3

Since the volume of air is 0 cm^3, we cannot directly calculate the density of air using this method. However, we can approximate the density of air by considering the relative density.

Relative density is the ratio of the density of air to the density of a standard substance. In this case, the standard substance is water with a density of 1g/cm^3.

Relative density of air = Density of air / Density of water

Density of water = 1g/cm^3 (given)

Using the formula, we can calculate:

Relative density of air = 0g/cm^3 / 1g/cm^3 = 0

Therefore, the relative density of air is 0, indicating that air is less dense than water.