Question

A balloon contains 5470cm3 of gas and has a mass of 10.24g. The mass of the empty balloon is2.42g. What is the density of the gas.

Answer 1

Answer: The density of gas is
`1.43* 10^(-3)g/cm^3`

Step-by-step explanation:

We are given:

Mass of empty balloon,
`m_1` = 2.42 g

Mass of balloon with gas,
`m_2` = 10.24 g

Mass of gas =
`m_2-m_1=10.24-2.42=7.82g`

To calculate density of a substance, we use the equation:

`\text{Density of a substance}=\frac{\text{Mass of a substance}}{\text{Volume of a substance}}`

We are given:

Mass of gas = 7.82 g

Volume of gas =
`5470cm^3`

Putting values in above equation, we get:

`\text{Density of gas}=(7.82g)/(5470cm^3)\\\\\text{Density of gas}=1.43* 10^(-3)g/cm^3`

Hence, the density of gas is
`1.43* 10^(-3)g/cm^3`

Answer 2

density is the mass of substance per unit volume of a substance. to solve the problem, first calculate the mass of the gas.
mass gas = ( mass of balloon with gas ) - ( mass of balloon )
mass gas = 10.24 g - 2.42 g
mass gas = 7.82 g

so the density
density = m / v = 7.82 g / 5470 cm3
density = 0.00145 g / cm3