How many moles of water (h2o) would be produced if 10 moles of o2 gas reacted completely with excess h2 gas?
2 h2(g) + o2(g) → 2 h2o(g)
a. 5
b. 10
c. 20
d. 30

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.

Aresearcher wants to experiment with an element that reacts like phosphorus (p) but has a greater atomic mass. which element should the researcher select for the experiment?