The mining of which resource produces the most toxic ways?
a)copper
b) quartz
c) silica
d) tin

What is the correct lewis structure for chloroform chcl3

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

If an atom has 12 protons and 13 neutrons