Answer:To answer this question using Dalton's law, we need to know the partial pressures of each gas in the mixture. Dalton's law states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of each gas in the mixture.
Let's say the diver has a tank with the following gas mixture:
Oxygen (O2): 21%
Nitrogen (N2): 79%
And the pressures in the tank at the end of the dive are:
Oxygen (O2) pressure: 500 psi
Nitrogen (N2) pressure: 2000 psi
To find the total pressure in the tank, we need to calculate the partial pressure of each gas in the mixture. We can do this by multiplying the percentage of each gas by the total pressure in the tank:
Oxygen (O2) partial pressure = 0.21 x 2500 psi = 525 psi
Nitrogen (N2) partial pressure = 0.79 x 2500 psi = 1975 psi
Then, we can use Dalton's law to find the total pressure in the tank:
Total pressure = Oxygen partial pressure + Nitrogen partial pressure
Total pressure = 525 psi + 1975 psi
Total pressure = 2500 psi
Therefore, the total pressure in the tank is 2500 psi.
Step-by-step explanation: