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jenyasd209 [6]
3 years ago
14

See if you can think of a way to prove that it is the oxygen in air, not nitrogen, that causes rusting.

Chemistry
1 answer:
allsm [11]3 years ago
8 0

Answer:

rusting occur in oxygen and water coz when you put a nail into the water and you leave it three days you will the nail become brownish and that is due to oxygen and water

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Chemical energy is in the Pontential Energy group....Maybe?
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What would sunscreen look like if it absorbed all of the visible light that hit it?
Sati [7]

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Explanation:

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State two things you notice about a metal when being touched
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4 0
3 years ago
What is the electronic configuration of Au3+?
Anettt [7]

Answer:

AU^{3+} : [Rn] 5f^3

Explanation:

Writing electronic configuration of any element you should know atomic number of that element ,

and also electrons are filling according to their energy level and first electron is filled in the lower energy orbital

and it follows n+1 rule if n+1 is same for two orbital electron will go first in the lowest value of n.

writing electronic configuration of ion can be done like first for their neutral atom and then add or remove electron it will make things easy because there are also some eception case their you may do wrong.

AU : [Rn] 5f^3 6d^1 7s^2

remove three electron from outer most shell of AU

AU^{3+} : [Rn] 5f^3

4 0
3 years ago
A photon has an energy of 2.93 × 10 to the power of -25 J. What is its frequency? What type of electromagnetic radiation is this
Svet_ta [14]
You need to know the energy frequency relationship for photons, which is thanks to Max Planck:

Photon Energy = Planck constant x Frequency

Rarranged:
Photon Energy / Planck Constant = Frequency

Planck Constant = 6.63x10^-34

2.93x10^-25 / 6.63x10^-34 = Frequency

6 0
3 years ago
Read 2 more answers
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