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

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.