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garik1379 [7]
3 years ago
11

SCRIE FORMULA ŞI DENUMEŞTE SUBSTANŢA

Chemistry
1 answer:
Anika [276]3 years ago
4 0

Answer:

Here's what I get  

Explanation:

10. NH₃, ammonia

11. H₂CO₃, carbonic acid

12. CO₂, carbon dioxide

13. CaCO₃, calcium carbonate

14. PbCO₃ lead(II) carbonate  

15. Co₃(PO₄)₂, cobalt(II) phosphate

16. As₂S₃, arsenic(III) sulfide.

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Tetrahydrofuran (THF) is a common organic solvent with a boiling point of 339 K. Calculate the total energy (q) required to conv
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Explanation:

For the given reaction, the temperature of liquid will rise from 298 K to 339 K. Hence, heat energy required will be calculated as follows.

             Q_{1} = mC_{1} \Delta T_{1}

Putting the given values into the above equation as follows.

           Q_{1} = mC_{1} \Delta T_{1}

                      = 27.3 g \times 1.70 J/g K \times 41

                      = 1902.81 J

Now, conversion of liquid to vapor at the boiling point (339 K) is calculated as follows.

           Q_{2} = energy required = mL_{v}

    L_{v} = latent heat of vaporization

Therefor, calculate the value of energy required as follows.

             Q_{2} = mL_{v}

                         = 27.3 \times 444

                         = 12121.2 J

Therefore, rise in temperature of vapor from 339 K to 373 K is calculated as follows.

            Q_{3} = mC_{2} \Delta T_{2}

Value of C_{2} = 1.06 J/g,    \Delta T_{2} = (373 -339) K = 34 K

Hence, putting the given values into the above formula as follows.

             Q_{3} = mC_{2} \Delta T_{2}

                       = 27.3 g \times 1.06 J/g \times 34 K

                       = 983.892 J

Therefore, net heat required will be calculated as follows.

            Q = Q_{1} + Q_{2} + Q_{3}

                = 1902.81 J + 12121.2 J + 983.892 J

                = 15007.902 J

Thus, we can conclude that total energy (q) required to convert 27.3 g of THF at 298 K to a vapor at 373 K is 15007.902 J.

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Answer:

Explanation:

a) Na₂O

b) FeS

c)Co₂(SO₄)₃

d) BaF₂

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3 years ago
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Answer:

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Explanation:

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