Calculate the net charge on a substance consisting of a combination of 8.9 × 10
13
protons
and 4.4 × 10
13
electrons.
Answer in units of C
To calculate the net charge on a substance, you need to subtract the total number of electrons from the total number of protons.
Given that there are 8.9 × 10^13 protons and 4.4 × 10^13 electrons, you can calculate the net charge as follows:
Net Charge = Total number of protons - Total number of electrons
Net Charge = (8.9 × 10^13) C - (4.4 × 10^13) C
Calculating the net charge:
Net Charge = (8.9 × 10^13 - 4.4 × 10^13) C
Net Charge = 4.5 × 10^13 C
Therefore, the net charge on the substance is 4.5 × 10^13 C.
To calculate the net charge on a substance, you need to determine the difference between the total number of protons and electrons.
Given that there are 8.9 × 10^13 protons and 4.4 × 10^13 electrons, we can now proceed with the calculation.
1. Determine the total charge of the protons:
Each proton has a charge of +1.6 × 10^-19 C.
So, the total charge of the protons = (8.9 × 10^13) * (1.6 × 10^-19) C.
2. Determine the total charge of the electrons:
Each electron has a charge of -1.6 × 10^-19 C.
So, the total charge of the electrons = (4.4 × 10^13) * (-1.6 × 10^-19) C.
3. Calculate the net charge:
Net charge = Total charge of protons + Total charge of electrons.
Let's perform the calculation:
Total charge of protons = (8.9 × 10^13) * (1.6 × 10^-19) C = 1.424 × 10^-5 C
Total charge of electrons = (4.4 × 10^13) * (-1.6 × 10^-19) C = -7.04 × 10^-6 C
Net charge = (1.424 × 10^-5) C + (-7.04 × 10^-6) C = 7.2 × 10^-6 C (rounded to two significant figures)
Therefore, the net charge on the substance is 7.2 × 10^-6 C.