The penguin has a sleek body that helps it to move quickly in water.
They look like gases plasmas have no fixed shapes or volume and are less dense tan solids or liquids
Dynamic equilibrium of a chemical system is reached when the rate of forward reaction equals to that of the the backward reaction.
Molar mass KCl = 74.55 g/mol
Number of moles:
mass KC / molar mass
149 / 74.55 => 1.998 moles
Volume in liters: 500 mL / 1000 => 0.5 L
Therefore:
M = moles / volume
M = 1.998 / 0.5
M = 3.996 mol/L⁻¹
