Calculate the concentration of a solution of ammonium chloride made by dissolving 46.0g into 500.0ml

1.72 moles/liter

Molarity = Number of moles of solute ÷ Volume of the solution

In this case;

Mass of the solute = 46.0 g

Volume of the solution = 500.0 mL or 0.5 L

To calculate the molarity;

First, calculate the number of moles of the solute

Moles = Mass ÷ Molar mass

Molar mass of solute, NH₄Cl = 53.491 g/mol

Therefore;

Moles of the solute = 46.0 g ÷ 53.491 g/mol

                               = 0.860 moles

Second, we calculate the molarity of the solution;

Using the formula;

Molarity = Moles of solute ÷ Volume of solution

             = 0.860 moles ÷ 0.5 L

             = 1.72 Moles/liter or 1.72 M

Thus, the concentration of the solution is 1.72 moles/liter

how about u try it first

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6