If anyone is good at chemistry.....

[Hahn24]

Hey everyone, im taking a summer chem class and im doing some hw right now and im really struggling on 2 problems so i thought id ask if anyone is good at chemistry they could try to help me out!

1.Consider the following equation:
N2 + 3 H2 ® 2 NH3

How many moles of hydrogen are required to react with 3.4 moles of nitrogen to form ammonia fertilizer?
- 3.4 moles hydrogen
- 10.2 moles hydrogen
- 1.13 moles hydrogen
- not enough information is given

2.Which of the following substances does not contain any covalent bonds?
- Mg(PO4)2 (Magnesium phosphate)
- NaHCO3 (baking soda)
- NaBr (Sodium bromide)
- NaNO3 (sodium nitrate)

 

[Backnblack]

I want to say #1 is 10.2 (3.2? to 1)
#2 is baking soda (it's a powder)

I have not had chemistry in 20 yrs....lol

 

[superkeest]

is there a text book for the course?

 

[That_Guy™]

Agree that #1 is 10.2
Ratio of N to H is 2:6 or 1:3
3.4 x 3 = 10.2

#2 Sodium Bromide
NaBr is a salt with an IONIC bond

 

[mek_man]

That_Guy is correct on both accounts..