8. The pOH of a certain soft drink was measured to be 8.53. What is the [H3O+] for this soft drink? [HINT: Do not forget the contribution from H₂O] a) 3.88 x 106 M b) 3.25 x 10-8 M 1.63 x 10-4 M 2.11 x 10-4 M g) 7.59 x 10-6 M c) 6.09 x 10-5 M d) 3.49 x 10-6 M [

A reaction at -11.0 °C evolves 769. mmol of sulfur hexafluoride gas. Calculate the volume of sulfur hexafluoride gas that is collected. You can assume the pressure in the room is exactly 1 atm. Round your answer to 3 significant digits. volume: L x10 X S

Here is a graph of the pressure of ethylene (C₂H₂) in a reaction vessel during a certain chemical reaction. Use this graph to answer the questions in the table below. atm 30- 25- 20.870 15- 10+ 5+ 50 100 150 seconds Is C₂H4 being created or destroyed by the chemical reaction? If C₂H4 is being created or destroyed, what is the rate at which it is being created or destroyed 100 seconds after the reaction starts? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. If C₂H4 is being created or destroyed, what is the average rate at which it is being created or destroyed during the first 100 seconds of the reaction? 200 Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. 250 created destroyed 300 neither created nor destroyed 0 X 00 0.0 Ś

Please give me the right answer