You have been transported into the future and are enrolled in your preferred college, majoring in the subject of your dreams, But all is not well. You have been kidnapped by armed political science majors (who are upset because you told them that
political science is not a real science)
Although blindfolded, you can tell the speed of their car (by the whine of the engine) and the time of travel (by mentally
counting off seconds). You can also tell that they have only been driving in one direction since they have taken no turns while
traveling. From these clues, you know that you are taken along the following course: 32 km/h for 15 minutes, 60 km/hr for 30
minutes, 16 km/hour for 15 minutes. At that point, how far away are you from your initial position mi

none, its a machine

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂

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 =