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QveST [7]
3 years ago
9

Consider all the elements in the periodic table. The stair-step line between the pink squares and the yellow squares separates t

he _______ (pink) from the _______ (yellow)
A. Gasses; solids

B. Metals; nonmetals

C. Nonmetals; metals

D. Reactive; nonreactive

Chemistry
1 answer:
lesantik [10]3 years ago
4 0

B. Metals; nonmetals

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Give three examples, from the lab, where potential energy was converted to kinetic energy.
GREYUIT [131]

Give 3 Examples of where potential energy was converted to knlinetic energy:

Curtain

A ball before moving

An apple from the tree then falling down

When the Curtains are still, we call the that potential energy. If you move the curtains around, that is kinetic energy

The ball is still, that is potential energy. Then the ball is moving, the is kinetic energy

There is a apple ganging from a tree, that is potential energy. That apple is fall, this is kinetic energy

Hope this helps

Don't type or write in the answer, I'm not sure what from the lab means. These are a few potential into kinetic energy I could have think of!

4 0
3 years ago
A binary compound created by reaction of bismuth and an unknown element E contains 52.07% Bi and 47.93% E by mass. If the formul
yulyashka [42]

Answer:

Atomic mass of E is 128.24

Explanation:

  • The percentage composition by mass of an element in a compound is given by dividing the mass of the element by the total mass of the compound and expressing it as a percentage.
  • In this case; the compound Bi₂E₃

Percentage composition of bismuth = 52.07%

Percentage composition of E = 47.93%

Mass Bismuth in the compound is (2×208.9804) = 417.96 g

Therefore,

To calculate the atomic mass of E

52.07% = 417.96 g

47.93% = ?

            = (47.93 × 417.96 ) ÷ 52.07 %

            = 384.729

         E₃ = 384.729

Therefore; E = 384.729 ÷ 3

                     = 128.24  

The atomic mass of E is 128.24

6 0
3 years ago
Which statement describes an atomic nucleus?
likoan [24]
The nucleus consists of the protons and neutrons. It contains the most mass in the atom. 
4 0
3 years ago
Read 2 more answers
About how many harvests of bamboo can be collected during the time it takes to fully grow one pine tree?
Tomtit [17]

Answer:

bamboo can grow 910 mm (36 in) within a 24-hour period,at a rate of almost 40 mm (1 1⁄2 in) an hour (a growth around 1 mm every 90 seconds, or 1 inch {2.54 centimeters} every 40 minutes).

Explanation:

6 0
2 years ago
True or False.....When heat flows into matter, the enthalpy/heat of reaction and temp. will
rewona [7]

Answer:

true I think but I am not sure

Explanation:

I hope it's help u :)

4 0
3 years ago
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