Help me pls :( Sandee threw a plastic ball into the pool for his dog to fetch. The mass of the ball was 125 grams. What must the volume be to have a density of 0.500 g/mL?

R.I.P. X

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 =