If 10 g of nitrogen reacts with hydrogen to form 12 g of ammonia how many grams of hydrogen were used in this reaction

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).