Question

Karen  measures the initial volume of water as 12. 5 mL.  She then adds a 2. 3 gram rubber stopper and the volume rises to 20. 8

mL. What is the volume of Karen's rubber stopper?


a18. 5 grams

b 2. 3 grams

c 20. 8 ml

d 8. 3 ml

Answer 1

It is 8.3 mL.

Total volume (20.8) = initial volume (12.8) + volume of rubber stopper (x)

X + 12.8 = 20.8
Subtract 12.8 from both sides
X = 8.3