Answer:
D
Explanation:
Since steam can condenses it can deliver more energy.
Answer: M = 3 M
Explanation: Molarity is the ratio between the number of moles per unit Liter of volume.
M = n / L
= 6 mole / 2 L
= 3 M
The two different ions are Na and sulphur.

Density is defined as Mass per unit volume of an object ~
And hence, the correct choice is ~ 1


Answer:
They all have 7 valence electrons on it's outer shell.