Question

A container holds a gas consisting of 5.75 moles of oxygen molecules. One in a million of these molecules has lost a single electron. NA=6.022×1023mol−1 , e=1.60×10−19C.

What is the net charge of the gas?
Express your answer to three significant figures and include the appropriate units.

Answer 1

The net charge of the gas can be determined by calculating the number of electrons that have been lost.

Step-by-step explanation:

The net charge of the gas can be calculated by determining the number of electrons that have been lost. Since one in a million of the oxygen molecules has lost a single electron, we can calculate the number of electrons lost using the formula:

Number of electrons = Total charge / Charge per electron

Given that the total charge is -2.50 C and the charge per electron is -1.60 × 10-19 C:

-2.50 C / -1.60 × 10-19 C = 1.56 × 1019 electrons

Therefore, the net charge of the gas is 1.56 × 1019 electrons.