<span>A) elements and compounds.
Compounds are two combined elements.</span>
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
Friction. It transforms other forms of energy into thermal energy
Potassium is the simplest form of matter and therefore can not be broken down by chemical change.
We can only see things if they give off light but be we use other senses to gather information about things we cannot see.
