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Norma-Jean [14]
3 years ago
12

The right answer for this problem

Chemistry
1 answer:
Evgen [1.6K]3 years ago
5 0

Answer:

(a)  When aqueous solution of hydrochloric and ammonia chemically react together then it results in the formation of ammonium chloride.

The reaction equation for this reaction is as follows.

         

Now, ioni equation for this reaction is as follows.

    

Cancelling the spectator ions, the net ionic reaction equation is as follows.

          

(b)   When sodium hydroxide chemically reacts with ammonium chloride then it forms ammonia, water and sodium chloride as follows.

    

Now, the total ionic equation will be as follows.

 

Cancelling the spectator ions from the above equation. Then the net ionic equation will be as follows.

         

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A 33.69 g sample of a substance is initially at 29.4 °c. after absorbing 1623 j of heat, the temperature of the substance is 110
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Q= mcΔT
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Match each term below with its definition or description.
zubka84 [21]

Answer:

1. Equivalence point

2. Direct titration

3. Primary standard

4. Titrand

5. Back titration

6. Standard solution

7. Titrant

8. Indirect titration

9. End point

10. Indicator

Explanation:

1. The equivalence point is the tiration point at which the quantity or moles  of the added titrant is sufficient or equal to the quantity or moles of the analyte for the neutralization of the solution of the analyte.

2. Direct titration is a method of quantitatively determining the contents of a substance

3. A primary standard is an easily weigh-able representative of the mount of moles contained in a substance

4. A titrand is the substance of unknown concentration which is to be determined

5. The titration method that uses a given amount of an excess reagent to determine the concentration of an analyte is known as back titration

6. A standard solution is a solution of accurately known concentration

7. A titrant is a solution that has a known concentration and which is titrated unto another solution to determine the concentration of the second solution

8. Indirect titration is the process of performing a titration in athe reverse order

9. The end point is the point at which the indicator indicates that the equivalent quantities of the reagents required for a complete reaction has been added

10 An indicator is a compound used to visually determine the pH of a solution.

5 0
3 years ago
A chemical compound in which ions are held together in a lattice structure by ionic bonds
ehidna [41]

Answer:

Ionic compounds contain ions and are held together by the attractive forces among the oppositely charged ions

Explanation:

Common salt (sodium chloride) is one of the best-known ionic compounds. Molecular compounds contain discrete molecules, which are held together by sharing electrons (covalent bonding).

7 0
2 years ago
Convert 4.0 cm to mm.
BabaBlast [244]

Answer: 40mm

Explanation:

You would multiply 4.0 by 10.

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