C because seeps into earths to replenish earths groundwater
Answer:
Cabon-12 has same average atomic weight and mass number.
Explanation:
carbon-12 has average atomic weight 12 amu and mass number of 12.
amu represents average of mass of a nucleon.
As carbon-12 has same average atomic mass and mass number therefore carbon-12 is a good standard to determine average mass of a nucleon.
Again, abundance of carbon-12 isotope is almost equal to 99%. Therefore fluctuation of average atomic weight from 12 amu is very very low.
So, carbon-12 is taken as a standard to determine mass of a nucleon.
Hence atomic mass of carbon-12 is 12 amu.
Answer:
chemical change
Explanation:
electrolysis process by which electric current is passed through a substance to effect a chemical change.
the products formed from the reaction
all of the above
if i am correct the volume of nitrogen gas has to equal to molecules density, making the substance 1.27 liters :)
