Amixture of gases at a total pressure of 95 kpa contains nitrogen, carbon dioxide and oxygen. the partial pressure of carbon dioxde is 24 kpa and the partial pressure of the nitrogen is 48 kpa. what is the partial pressure of the oxygen?
a) 33kpa
b) 23 kpa
c) -3 kpa
d) 0.003 kpa

How many joules of heat are absorbed to raise the temperature of 650 grams of water from 5.00c to it's boiling point, 100c

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.