A mixture of helium, nitrogen, and oxygen has a total pressure of 756 mmHg. The partial pressures of helium and nitrogen are 229 mmHg and 205 mmHg, respectively. What is the partial pressure of oxygen in the mixture?

322 mmHg

Explanation:

Step 1: Given data

Total pressure of the gaseous mixture (P): 756 mmHgPartial pressure of helium (pHe): 229 mmHgPartial pressure of nitrogen (pN₂): 205 mmHg

Step 2: Calculate the partial pressure of oxygen (pO₂)

The total pressure of the gaseous mixture is equal to the sum of the partial pressures of the individual gases.

P = pHe + pN₂ + pO₂

pO₂ = P - pHe - pN₂

pO₂ = 756 mmHg - 229 mmHg - 205 mmHg

pO₂ = 322 mmHg

The answer is c) pyrite

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy