Oxygen gas, generated by the reaction 2KCIO,(s) + 2KCIa) + 30-(9), is collected over water at 27 C in a 1.40-L vessel at a total pressure of 760. torr. (The vapor pressure of H;0 at 27°C i 26.0 torr.) How many moles of KCIO, were consumed in the reaction? R=0 0821 Latm mol' K!

If you want to change the pitch of a sound, you have to change the question 7 options: volume speed amplitude frequency

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-