What Is the Correct Molecular Formula for a Decomposing Nitrogen Hydride?

[Michael_Light]

Homework Statement

1)When 0.1mol of a hydride of nitrogen , Y, decomposes completely, it produces 0.3mol of gaseous elements. Y might be

A)NH₃
B)N₂H₄
C)N₂H₆
D)N₃H₆

2) Under the same conditions, 10cm³ of an oxide of nitrogen produces 10cm³ of nitrogen when reduced. The formula of the oxide could be

1. N₂O₅
2. N₂O
3. NO

A)Only 1 is correct
B)Only 1 and 2 are correct
C) only 2 and 3 are correct
D) 1,2 and 3 are correct

Homework Equations

The answer for both 1 and 2 is B.

The Attempt at a Solution

Can anyone help me with question 1 and 2? If possible please explain or show me the working on how to obtain the final answer. Cause i really blur... Thanks...

 

[Borek]

Start writing possible reaction equations.

 

[Michael_Light]

Start writing possible reaction equations.

What do you mean by possible equations? Can you solve 1 question for me so i can have 1 example to refer? ><

 

[Borek]

Reaction equations of decomposition reactions. For example:

2NH₃ -> N₂ + 3H₂