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tatyana61 [14]
3 years ago
10

How is a universal pH indicator made

Chemistry
1 answer:
Arte-miy333 [17]3 years ago
3 0
Hey!! your answer is -----

universal pH indicator is made up by the combination of several types of indicator.



hope you like ______★
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Write a chemical equation for the dissolution of the AgCl precipitate upon the addition of NH,(aq).
Kobotan [32]

Explanation:

White precipitate of silver chloride get dissolves in excess ammonia to formation of complex between silver ions, chloride ions and ammonia molecules.

The chemical reaction is given as:

AgCl(s)+2NH_3(aq)\rightarrow Ag[(NH_3)_2]^+Cl^-(aq)

When 1 mole of silver chloride is added to 2 mole of an aqueous ammonia it form coordination complex of diaaminesilver(I) chloride.

7 0
3 years ago
Silicon is an element that is found directly underneath carbon in the periodic table and thus has similar properties to carbon,
kirza4 [7]

Answer:

            Four electrons are present in the valence shell of Silicon.

Explanation:

                   Valence shell electrons are those electrons which are present in the outermost shell of an atom. These valence shell electrons are responsible for in the formation of bonds with other atoms.

                   Silicon having atomic number 14 has fourteen electrons in its neutral state and has the electronic configuration as follow;

                                              1s², 2s², 2p⁶, 3s², 3p²

In given configuration the valence shell (outermost shell) is 3 and the number of electrons present in it are four i.e. 3s² and 3p² (2 + 2 = 4) respectively.

7 0
3 years ago
Help I’m timed!
Anastaziya [24]

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Explanation:

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3 years ago
What do you think would happen if you had a very small amount of water in a glass and you
Ipatiy [6.2K]
If it was warn - hot water, i would say yes



the warm - hot water would dissolve because of the temperature
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D. Air molecules touch the warm ground, heating them up
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