Ammonia gas is synthesized according to the UNBALANCED equation N2(g) + H2(g) – NH3(g)
If 15.0 L of nitrogen are reacted with an excess of hydrogen, how many liters
of ammonia could be produced? Assume STP.
a. 5.00 L
b. 10.0L
c. 15.0 L
d. 20.0L
e. 30.0L

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.

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?