4.25 g. of zinc hypochlorite is dissolved in 215 ml. of water. what is the molarity of the solution

To find the molarity of a solution, we need to know the amount of solute (in moles) and the volume of the solution (in liters).

First, let's calculate the amount of zinc hypochlorite in moles. We can use the formula:

moles = mass / molar mass

The molar mass of zinc hypochlorite (Zn(ClO)2) is calculated by adding up the atomic masses of its components.

Zinc (Zn) has a molar mass of 65.38 g/mol. Chlorine (Cl) has a molar mass of 35.45 g/mol, and oxygen (O) has a molar mass of 16.00 g/mol.

Thus, the molar mass of zinc hypochlorite (Zn(ClO)2) is:

65.38 g/mol (Zn) + 2 * (35.45 g/mol (Cl) + 16.00 g/mol (O)) = 65.38 g/mol + 2 * (35.45 g/mol + 16.00 g/mol) = 65.38 g/mol + 2 * 51.45 g/mol = 65.38 g/mol + 102.90 g/mol = 168.28 g/mol

Now let's calculate the moles of zinc hypochlorite:

moles = 4.25 g / 168.28 g/mol = 0.0252 mol (rounded to four decimal places)

Next, we need to convert the volume of the solution from milliliters to liters:

volume = 215 ml / 1000 ml/L = 0.215 L

Finally, we can calculate the molarity (M) using the formula:

Molarity = moles / volume

Molarity = 0.0252 mol / 0.215 L = 0.117 mol/L (rounded to three decimal places)

Therefore, the molarity of the solution is approximately 0.117 mol/L.