Question

A chemist adds 50.0ML of a 0.20 mol/l sodium chloride solution to a reaction flask. Calculate the millimoles of sodium chloride the chemist has added to the flask. Round your answer to 2 significant digits.

Answer 1

Answer:

10 mmoles

Explanation:

moles = Molarity x Volume in Liters

moles NaCl = (0.20M)(0.050L) = 0.010mol x (1000 mmoles/mole) = 10 mmoles

Answer 2

Answer:

10 millimoles

Explanation:

moles = Molarity x Volume in Liters

moles NaCl = (0.20M)(0.050L) = 0.010mol x (1000 millimoles/mole) = 10 millimoles