Calculate mole solute in solution?

I added 0.2968g of an unknown to a solution. I found that the molality of the solution is 0.085m and there is 0.0156kg of solvent. Calculate the moles of solute present in solution?

Thanks!

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How did you convert 0.2968 g to mols without the molar mass.

To calculate the moles of solute present in the solution, you need to use the formula:

moles of solute = molality * mass of solvent

First, convert the mass of the solvent from kilograms to grams:

mass of solvent = 0.0156 kg * 1000 g/kg
mass of solvent = 15.6 g

Next, substitute the given values into the formula:

moles of solute = 0.085 m * 15.6 g
moles of solute = 1.326 g

So, there are 1.326 moles of solute present in the solution.

To calculate the moles of solute present in the solution, we need to use the molality of the solution and the mass of the solvent.

Molality (m) is defined as the number of moles of solute per kilogram of solvent. In this case, the molality of the solution is given as 0.085 m, and the mass of the solvent is given as 0.0156 kg.

First, we can calculate the moles of solvent using the equation:

moles of solvent = mass of solvent / molar mass of solvent

Since the molar mass of solvent is not provided, we will assume it as water (H2O), which has a molar mass of 18.01528 g/mol.

moles of solvent = 0.0156 kg / 18.01528 g/mol

Now we can calculate the moles of solute using the equation:

moles of solute = molality × moles of solvent

moles of solute = 0.085 m × (0.0156 kg / 18.01528 g/mol)

Using the given value, we can calculate the moles of solute:

moles of solute = 0.085 × (0.0156 / 18.01528)

Therefore, the moles of solute present in the solution is approximately 0.00007374 mol.