Identify the charge on the atom or ion that has one proton, zero neutrons, and zero electrons. A.-2
B.1
C.-4
D.0
E.2
F.-1
G.-3
H.4
I.3

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )