The SI unit for the amount of substance present is the mole.
The mole is defined as the amount of substance that has the same amount of particles as there are atoms in 12 grams of carbon-12. Mathematically, the moles of a substance may be computed using:
moles present = mass of substance / molecular mass of substance
Answer:
the second one looks like it so I picked the second one
Stars on the main sequence fuse hydrogen into helium via a six-stage sequence of reactions
Answer:
This would be the hydride ion where H gains an electron from a metal such as Na
Explanation:
The answer is salinity, salinity is the saltiness or dissolved inorganic salt content of a body of water.
