Question

A graduate weighs 35.825 g. When 10 mL of water are measured in it, the weight of the graduate and water is 45.835 g. Calculate the weight of the water and express any deviation from 10 g as a percentage of error.

Answer 1

Calculated weight of water = 10.01 g

percentage error = 0.1%

Explanation:

Given:

Weight of graduate = 35.825 g

Weight of graduate + Water = 45.835 g

Now,

The weight of water = ( Weight of graduate + Water ) - Weight of graduate

or

The weight of water = 45.835 - 35.825

or

The weight of water = 10.01 g

Now,

The percentage of error =
`\frac{\textup{Calculated value - Actual value}}{\textup{Actual value}}*100`

or

The percentage error =
`\frac{\textup{10.01 - 10}}{\textup{10}}*100`

or

The percentage error = 0.1%