How many L of carbon dioxide would be produced if 20.0 liters of O2 gas were burned at a temperature of -10.0 degrees celsius and a pressure of 8.3 atm?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Explain why scientists use shared characteristics to make cladograms.

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)