Question

To determine the density of an irregularly shaped object, a student immersed the object in 21.2 mL

of water in a graduated cylinder causing the level of the water to rise to 27.8 mL. If the object has a
mass of 22.4 grams, what is the density of the object

Answer 1

Answer: The density of object is 3.4 g/mL

Step-by-step explanation:

We are given:

Volume of cylinder without object,
`V_1` = 21.2 mL

Volume of cylinder with object,
`V_2` = 27.8 mL

Volume of object =
`V_2-V_1=27.8-21.2=6.6mL`

To calculate volume 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 object = 22.4 g

Volume of object = 6.6 mL

Putting values in above equation, we get:

`\text{Density of object}=(22.4g)/(6.6mL)\\\\\text{Density of object}=3.4g/mL`

Hence, the density of object is 3.4 g/mL

Answer 2

Density = mass/ vol
the vol is 27.8-21.2 ml = 6.6ml
D = 22.4g/ 6.6ml
D= 3.4g/ml