What is the mass of a sample of NH3 containing 7.20 x 10^24 molecules of NH3?

161 grams

187 grams

203 grams

214 grams

Hydrochloric acid reacts with sodium hydroxide to release water and sodium chloride. which of these is a balanced chemical equation for this reaction?

Why is there a difference in the conductivity of pure solid NaC1 and of the 1.0 M NaC1 soulution

Given that hclo4 is a strong acid, how would you classify the basicity of clo-4?

Which similarity did the Aztecs and ancient Egyptians share? They both created chinampas. Neither of them worshipped the sun. They both built pyramids. Neither of them held slaves.

What does crystalize mean

Aluminum oxide, Al2O3, is used as a filler for paints and varnishes as well as in the manufacture of electrical insulators. Calculate the number of moles in 47.51 g of Al2O3.

What volume of 2.00 m must be added to 150.0 ml of 1.00 m chloroacetic acid to produce a buffer solution having a ph of 3.30?

Which microscope came out first

Which exerts greater pressure on the floor-standing flat-footed or standing on tiptoe? on tiptoe, because the force acts over less area on tiptoe, because the force acts over more area flat-footed, because the force acts over more area flat-footed,

1. Sara tells Michael she is 160 centimeters tall, while Michael says he is 60 inches tall. If there are 2.54 centimeters in an inch, who is taller