A sample of oxygen gas that contains twice Avogadro's number of ...

[WhattoUnderstand]

A sample of oxygen gas that contains twice Avogadro's number of molecules has a mass of ________.
 
  A) 8.0 g
  B) 16.0 g
  C) 32.0 g
  D) 64.0 g

Question 2

Increasing the pressure will ________. 2SO2 (g) + O2 (g) = 2SO3 (g)
 
  A) shift the reaction to the right
  B) shift the reaction to the left
  C) have no effect
  D) cannot be determined, since the temperature is unknown

Question 3

Ammonia can be prepared by the reaction of magnesium nitride with water. The products are ammonia and magnesium hydroxide. When the equation is written and balanced, the coefficient of water is
 
  A) 1.
  B) 2.
  C) 3.
  D) 6.

[ky860224]

Answer to Question 1

D

Answer to Question 2

A

Answer to Question 3

D

[WhattoUnderstand]

Wow, this really help

[helenmarkerine]

Thanks for the timely response, appreciate it