Which of these is a unit of pressure?
i. psi
ii. k
iii. atm
o
i only
o
i and ii
iii only
i and iii

Which of the following is most likely true about water in chemical solutions?

What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves

Which compound most likely has the greatest bond energy?