A2.0-liter aqueous solution contains a total of 3.0 moles of dissolved nh4cl at 25°c and standard pressure.
determine the molarity of the solution.

Given that

Volume of solution = 2.0 L

Number of mole of solute = 3.0 mole

Therefore molarity = number of moles / volume in L

= 3.0 Mole /2.0 L

= 1.5 mole / L

= 1.5 M

Molarity:

The number of moles of solute per liter of solution is known as molarity of the solution. It symbolized by M. Molarity of any solution is a ratio of moles of solutes per liter of solution.  It expressed by the following formula:  

molarity = number of moles / volume in L

b i think it’s a water wheel turning in a stream

the answer for sodium is 0.186

the answer for rubidium is 0.251