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pentagon [3]
3 years ago
5

How you can separate two soluble substance​

Chemistry
1 answer:
Len [333]3 years ago
4 0

Answer: To Separate two water-soluble compounds first concentrate the reaction mixture by vacuum evaporation and then partial crystallization at various temperatures .

Explanation:

Im not sure if its right but if its wrong, Im sorry

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Calculate the number of formula units in 1.87 mol of NH4Cl
nydimaria [60]

Answer:

1.13 x 10²⁴formula units

Explanation:

Given parameters:

Number of moles of NH₄Cl = 1.87mol

Unknown:

Number of formula units = ?

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From mole concept;

     1 mole of a substance contains 6.02 x 10²³ formula units

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    1.87 moles of  NH₄Cl   1.87 x 6.02 x 10²³ = 1.13 x 10²⁴formula units

4 0
2 years ago
Plzzzzz help me to solve this question.​
aleksklad [387]

Answer:

Explanation:

A1. Chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.

A2. The reaction of an acid with a base is called a neutralization reaction. The products of this reaction are a salt and water. ... For example, the reaction of hydrochloric acid, HCl, with sodium hydroxide, NaOH, solutions produces a solution of sodium chloride, NaCl, and some additional water molecules

A3. Methyl orange has the property to color alkaline and neutral water yellow. If the water becomes acidic, it turns red immediately.

3 0
3 years ago
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