This is the balanced eq
N2 + 3H2 -> 2NH3
first you need to find mole of N2 by using
mol = mass ÷ molar mass.
mol N2= 20g ÷ (14.01×2)g/mol
=0.7138mol
then look at the coefficient between H2 and NH3.
it is N2:NH3
1:2
0.7138:0.7138×2
0.7138:1.4276 moles
moles of NH3 = 1.4276 moles
It is a poly atomic anion because it has more than one atom and a negative charge
A) Burning
Burning is a chemical reaction while the other three answers are physical reactions.
Answer:
D
Explanation:
The proberties of the substances that are produced are different from the properties of the original substances.
