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Paha777 [63]
3 years ago
13

Is Boiling water a chemical or physical change?

Chemistry
1 answer:
kirza4 [7]3 years ago
7 0
<h2>         (っ◔◡◔)っ ♥ Hey Honey Here! ♥</h2>

♥answer♥

Physical

♥explanation♥

Physical changes alter only the size, shape, form or matter state of a material. Water boiling, melting ice, tearing paper, freezing water and crushing a can are all examples of physical changes.

♥plz give me brain list it would really help a lot♥

<h3>                        ♥  お力になれて、嬉しいです!♥</h3>
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Consider the following statements about first ionization energies:
stepladder [879]

Answer:

I,II, III

Explanation:

Firstly, the magnitude of nuclear charge affects the first ionization energy of an element. Hence,as effective nuclear charge increases, the attraction between the nucleus and the outermost electron increases and ionization energy consequently increases. Thus Mg has a higher first ionization energy than Be.

Secondly, oxygen has an electron configuration of 1s2 2s2 2p4 while nitrogen has an electron configuration of 1s2 2s2 2p3. Now, recall that extra energy is often associated with half filled orbitals hence nitrogen has a higher first ionization energy than oxygen. Furthermore, the addition of electron to an already half filled 2p orbital in oxygen (pairing) leads to inter electronic repulsion and drastic fall in first ionization energy. Therefore, as we move from nitrogen to oxygen in the periodic table, greater inter-electron repulsion between two electrons in the same p-orbital counter balances the increase in effective nuclear charge hence nitrogen has a greater first ionization energy than oxygen.

Lastly, the 3p orbital is far away from the nucleus hence we expect it to feel less of nuclear attraction than a 2p orbital. Hence the first ionization energy of Ar is less than that of Ne.

8 0
3 years ago
How mant atom arre in this compound: 2H2O
Karolina [17]

Answer:

3 atoms

Explanation:

it contains 2 atoms of hydrogen(H) and 1 atom of oxygen(O). So in total there are 3 atoms.

6 0
3 years ago
How many electrons, protons and neutrons are in the element sodium
scZoUnD [109]

Answer:

The element sodium has 12 neutrons, 11 electrons and 11 protons. The number of electrons and protons come from the element's atomic number, which is same 11. The number of neutrons can be found by subtraction of the atomic number from sodium's atomic mass of twenty three.

Explanation:

your welcome kind sir/ ma' am

5 0
3 years ago
A 56 g sample of peanut oil has a volume of 60.9 cm³. Calculate the density of the peanut oil. Remember to use the correct numbe
Ivan
0.92 because Mass divided by Volume = Density 
5 0
4 years ago
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Can someone help me name this hydrocarbon?
ser-zykov [4K]
2-ethyl-4,4 -dimethyl hex-1-ene.
3 0
3 years ago
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