1. In the reaction N2 + 3H2 -->2NH3, what is the mole ration of nitrogen to ammonia?
A: 1:2
B- 3:1
C- 2:1
D. can not be determined

2. In the unbalanced reaction Al2O3 --> Al + O2, what is the mole ratio of aluminum to oxygen?
A- 4:3
B- 2:3
C- 2:4
D- 3:4

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out