m = 2.7 kilograms is the mass of hydrogen in the balloon;
ro = 0.09 kilogram / cubic meter is the density of hydrogen.
It is required to determine V (cubic meter) – the volume of the balloon.
To determine the volume of a balloon, you need to use the following formula:
m = ro * V, hence:
V = m / ro = 2.7 / 0.09 = 30 cubic meters.
Answer: the volume of the balloon is 30 cubic meters.
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