Answer:
400 cm^3
Step-by-step explanation:
1 liter is equivalent to 1000 cubic centimeters.
Thus, to find the volume of the balloon and express it in cm^3, we just have to multiply the given by 1000.
(0.4 L) (1000 cm^3 / 1 L)
(0.4) (1000) cm^3
400 cm^3
Hope this helps!
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