How many milliliters of a 0.5 sodium chloride solution contain ...

[abc]

How many milliliters of a 0.5 sodium chloride solution contain 400 milligrams of sodium chloride?
 
  1. 800 mL
  2. 80 mL
  3. 200 mL
  4. 2000 mL

Question 2

Convert 0.45 centimeters to an equivalent length in millimeters.
 
  1. 45 mm
  2. 4.5 mm
  3. 0.45 mm
  4. 0.045 mm

[stano32]

Answer to Question 1

2

Global Rationale: 0.4 g  100 mL/0.5 g = 80 mL.

Answer to Question 2

2

Global Rationale: Move the decimal point one place to the right.

[abc]

Excellent

[komodo7]

Great answer, keep it coming