Question

For a concentration of 0.2 g per 100 ml, how much is needed for a 500 mL volume.

Select one:
O a. 1.2 g
O b. 1g
OC. 0.2g
O d. 0.8 g
0.6 g

Answer 1

Answer: b. 1g

Explanation: To calculate how much is needed for a 500 mL volume with a concentration of 0.2 g per 100 mL, you can use the following proportion:

(0.2 g / 100 mL) = (X g / 500 mL)

Cross-multiply to solve for X:

0.2 g * 500 mL = 100 mL * X

X = (0.2 g * 500 mL) / 100 mL

X = 1 g

So, you need 1 gram for a 500 mL volume. The correct answer is option (b) 1 g.