The answer to this question is B. Prairie Grass if I'm not mistaken. I hope this helps. ;)
The number of neutrons does element X have if its atomic number is 24 and its mass number is 90 is 24.
Answer: 1 mole of
has the greatest mass.
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP , contains avogadro's number
of particles and weighs equal to the molecular mass of the substance.
1 mole of
has a mass of 40 g.
1 mole of
has a mass of 28 g
1 mole of
has a mass of 32 g
1 mole of
has a mass of 16 g.
1 mole of
has a mass of 30 g.
Thus the greatest mass is of 1 mole of 