The mass of 1 mole of an element in grams) is the same as which quantity?
O
A. The atomic mass of the element times Avogadro's number
O
B. The atomic mass of the element in atomic mass units
O
c. The atomic number of the element
O
D. The atomic number of the element times Avogadro's number

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.