Name and show one animal that has the ability to hear lower frequencies than humans and one animal that can hear higher than humans. Write their frequency range

If an atom has 12 protons and 13 neutrons

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.

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb