A balloon has a volume of 1.5L at 25 C. If the volume changes to 1.8L, what must the new temperature be?

Explanation:

If we assume the balloon to be a constant pressure device and the gas filling it to be ideal.

pV = nRT

p, n and R are all constants so

V is directly proportional to T (which must be in Kelvins)

1.8/1.5 = (T + 273)/(25 + 273)

T = 84.6

T = 85°C

cancer risk hope this

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 =