Question

a certain solution has a molarity of m = 6.39 mol/l and has a volume of v =0.550 l what is the value of n

Answer 1

To find the value of n, which is the number of moles of solute, multiply the molarity (6.39 mol/L) by the volume (0.550 L) to get 3.5145 moles.

Step-by-step explanation:

The student is asking how to calculate the number of moles (n) of solute in a solution with a known molarity (M) and volume (V). The formula to find the amount of solute in moles is n = M × V. With a molarity (M) of 6.39 mol/L and a volume (V) of 0.550 L, we can calculate the number of moles of solute (n) using this formula.

To find n, you multiply the molarity by the volume: n = 6.39 mol/L × 0.550 L. Therefore, the value of n is 3.5145 moles of solute.

Answer 2

n = 3.49 mol

Molarity = moles/litres or c = n/V

n = Vc = 0.550 L × (6.39 mol/1 L) = 3.49 mol