10) Which gas sample at STP has the same number of molecules as a 2.0 Liter sample of Cl2 (g) at STP?
a) 1.0 L of H2 (g) b) 2.0 L of He
c) 3.0 L of NH3 d) 4.0 L of O2 (g)
11) 0.500 atm of NH3 gas is placed in a 12.0 L rigid container which was measured
at standard temperature.
a) Determine the mass of NH3 gas in this container in grams.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.