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

Sam is pushing a cart. How can he make the cart move faster? A) He can add weight to the cart. B) He can push the cart up a ramp. C) He can take the wheels off the cart. D) He can increase the force of his push.

87,036 mi Express your answer as an integer.

What element gains three electrons to fill its valence energy level? s n al c

Is vinegar considered as 2 substances already?

Balance the following reaction: NaOH + HCl → NaCl + H2O Enter your answer in the space provided.

How important is the resonance structure shown here to the overall structure of carbon dioxide? how important is the resonance structure shown here to the overall structure of carbon dioxide?

A farmer is analyzing cross sections of his land to determine where to build a well.

A drag racing vehicle travels from 0 to 100 mph in 5 seconds north. what is the acceleration

When dissolving a solid, what happens to the rate of dissolution while stirring the solution

What is the percent composition of sulfur compound that contains 20.8 g carbon and 54.4 g sulfur?