Calculate the molar concentration of a solution that is prepared by dissolving 5.00 g of sodium chloride, NaCl, in 2.00 dm3 of water.

Sure, here are the steps to calculate the molar concentration:

1. First, we need to calculate the number of moles of sodium chloride (NaCl). The molar mass of NaCl is approximately 58.44 g/mol. So, the number of moles (n) can be calculated using the formula:

   n = mass / molar mass n = 5.00 g / 58.44 g/mol = 0.0856 mol

2. Next, we need to convert the volume of the solution from dm3 to L, because the molar concentration is usually expressed in mol/L. 1 dm3 is equal to 1 L, so the volume is 2.00 L.

3. Finally, we can calculate the molar concentration (C) using the formula:

   C = n / V C = 0.0856 mol / 2.00 L = 0.0428 mol/L

So, the molar concentration of the solution is 0.0428 mol/L.