Question

How many grams of NaCl are needed in order to make a liter of a 2.00 M NaCl solution? O 58.4 g O 117 g O 2.00 g​

Answer 1

B.) 117 g

Step-by-step explanation:

(Step 1)

To find the mass, you need to first find the moles of NaCl using the molarity ratio.

Molarity = moles / volume (L)

2.00 M = moles / 1.0 L

2.00 = moles

(Step 2)

Now that you know the moles, you can convert it to grams using the molar mass.

Molar Mass (NaCl): 22.990 g/mol + 35.453 g/mol

Molar Mass (NaCl): 58.443 g/mol

2.00 moles NaCl 58.443 g
--------------------------- x ----------------- = 117 g NaCl
1 mole