Students used a potato gun to illustrate one of the gas laws. as they decreased the volume of the air in between two pieces of potato, the pressure exerted by the gas increased. this increase in pressure eventually forces the potato out of a tube.

Boyle's Law states that at constant temperature pressure and volume are inversely proportional.

Explanation:

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are their multiple choices ?

explanation:

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =