How would you determine the absolute zero temperature? a) You can not determine that temperature
b) Approach it using a gas thermometer at very low pressure
c) Measure it using a gas thermometer at zero pressure
d) Measure it using a mercury thermometer at the temperature that nitrogen boils

When hydrogen peroxide (h2o2) is added to potassium iodide (ki) solution, the hydrogen peroxide decomposes into water (h2o) and oxygen (o2). the chemical equation for the decomposition reaction is: 2h2o2—> 2h2o + o2. what is the role of the potassium iodide in this reaction? a. reactant. b. product. c. precipitate. d. catalyst.