Calculate the net charge on a substance consisting of a combination of 4.3 multiplied by 1013 protons and 2.5 multiplied by 1013 electrons.
(4.3-2.5)•1013•1.6•10^-19 = +2.92•10^-16 C
To calculate the net charge on a substance, we need to consider the charges of protons and electrons and then find the difference between the total number of protons and electrons.
The charge of a proton is +1, and the charge of an electron is -1. Since protons have a positive charge and electrons have a negative charge, adding protons and subtracting electrons will give us the net charge.
Let's work through the calculation:
Number of protons = 4.3 x 10^13
Number of electrons = 2.5 x 10^13
Net charge = (Number of protons) - (Number of electrons)
Net charge = (4.3 x 10^13) - (2.5 x 10^13)
To subtract the values with exponents, we need to ensure they have the same exponent. In this case, we can rewrite the numbers with a common exponent of 13:
Net charge = (4.3 - 2.5) x 10^13
Net charge = 1.8 x 10^13
So, the net charge on the substance is 1.8 x 10^13.
To calculate the net charge on a substance, we need to find the difference between the total positive charge (due to protons) and the total negative charge (due to electrons).
Given:
Number of protons = 4.3 x 10^13
Number of electrons = 2.5 x 10^13
The charge of a single proton is +1 elementary charge (e), and the charge of a single electron is -1 elementary charge (e).
Step 1: Calculate the total positive charge
Total positive charge = charge per proton x number of protons
Total positive charge = (+1 e) x (4.3 x 10^13) = 4.3 x 10^13 e
Step 2: Calculate the total negative charge
Total negative charge = charge per electron x number of electrons
Total negative charge = (-1 e) x (2.5 x 10^13) = -2.5 x 10^13 e
Step 3: Calculate the net charge
Net charge = total positive charge + total negative charge
Net charge = (4.3 x 10^13 e) + (-2.5 x 10^13 e)
Net charge = 1.8 x 10^13 e
Therefore, the net charge on the substance is 1.8 x 10^13 elementary charges.