How many moles of oxygen will occupy a volume of 2.5 Liters at 12 atm and 298 Kelvin?
Assume that R= 0.0821 Lxatm /mol x k

Drug abuse will not lead to physical and psychological dependence. true or false ?

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons