The following weighings were made during a laboratory exercise: Mass of evaporating dish59.260 g
Mass of sugar sample 1.61 g

The mass of the evaporating dish has how many number of significant figures?
(A) two (B) three (C) five (D) four

What shape would a molecule with two bound groups and two lone pairs have?

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1

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.