Atoms of which element have the greatest tendency to gain electrons?
(1) bromine (3) fluorine
(2) chlorine (4) iodine

50 pts plz what is the physical state of matter of baking soda.

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?