Atank of gas has partial pressures of nitrogen and oxygen equal to 1.61 × 104 kpa and 4.34 × 103 kpa, respectively. what is the total pressure of the tank? remember that (1.0 × 105) + (1.0 × 105) = 2.0 × 105.

Calculate the number of moles of ethane in 100 grams

Identify the correct mole ratio for each substance. sodium chloride (nacl) na: cl = 1: ammonium nitrate (nhno) h: o = 4:

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures