You would think that the bag of nails would have more mass but their masses are identical. <span>If you were to put them both in a vacuum chamber and let them fall from a great height, they would fall the same speed. The vacuum chamber would suck all of the air out of the cotton balls, thus making it heavier and weigh the same as the bag of nails.
Hopefully this is helpful and makes sense.</span>
The answer is: a. The number of sodium ions is equal to the number of formula units of salt.
Balanced chemical equation: Na⁺ + Cl⁻ → NaCl.
Formula unit is the representative particle of an ionic compound. It is lowest whole number ratio of ions in an ionic compound, for sodium chloride it is NaCl.
In this chemical equation one sodium cation and one chlorine anion form one sodium chloride formula unit.
Answer:
2Al + 6HCl -----> 2AlCl3 + 3H2
Reaction of acid with metals
Cu(OH)2. -----> H2O. + CuO
Dissociation of coper hydroxide / dissociation of base
Explanation:
Let's see the balanced equation
Hence
As moles are equal given
- Ca should be the limiting reagent
- 2mol Ca produces 2 mol CaO
- 3mol Ca produces 3mol CaO