The table shows information about four objects resting at the top of a hill.
four objects at rest on a hill
object
mass (kg)
potential energy (j)
w
980
35
1,029
62
1,519
24
es 1,176
which object is on the tallest hill?
50
tz
3
x
>
n

What does an electron configuration for an atom relate to the atoms placement on the periodic table

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.

Of the following elements, which is the least reactive? a. c b. h c. li d. he