Assume that your lungs hold 2 liters of gas. a) If your lungs were filled with helium, calculate the total thermal energy of that helium. b) Assume instead, your lungs are filled with air. Calculate the mass of the air in yourlungs. (Assume that air is 20%O2and 80%N2).c) Calculate the total thermal energy of the air in your lungs. d) If you had a piece of metal with the same mass as the air in your lungs, how highabove the ground would the metal have to be for its gravitational potential energy tobe equal to the thermal energy of the air in your lungs?

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

d.7.5cm is your answer

a straight line sloped