In the activity, click on the E∘cell and Keq quantities to observe how they are related. Use this relation to calculate Keq for the following redox reaction that occurs in an electrochemical cell having two electrodes: a cathode and an anode. The two half-reactions that occur in the cell are

Cu2+(aq)+2e−→Cu(s) and Co(s)→Co2+(aq)+2e−

The net reaction is

Cu2+(aq)+Co(s)→Cu(s)+Co2+(aq)

Use the given standard reduction potentials in your calculation as appropriate. ( Keq=5.88*10^20)

In the activity, click on the Keq and ΔG∘ quantities to observe how they are related.

Calculate ΔG∘ using this relationship and the equilibrium constant (Keq) obtained in Part A at T=298K: Keq=5.88*10^20

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

Hot air balloons float in the air because of the difference in density between cold and hot air. in this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. to do this, use the following variables and make these assumptions: the combined weight of the pilot basket together with that of the balloon fabric and other equipment is w. the volume of the hot air inside the balloon when it is inflated is v. the absolute temperature of the hot air at the bottom of the balloon is th (where th> tc). the absolute temperature of the cold air outside the balloon is tc and its density is ďc. the balloon is open at the bottom, so that the pressure inside and outside the balloon is the same. as always, treat air as an ideal gas. use g for the magnitude of the acceleration due to gravity.

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.