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4 years ago

13

Determine the empirical formula of an organic hydrocarbon compound that contains 80% by mass of carbon and 20% by mass of hydrog

en. If the Mr of the compound is 30, what is the molecular formula?

1 answer:

pashok25 [27]4 years ago

5 0

Answer: ethane

Explanation:

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What are the elements of PCl5 and the name

prisoha [69]

Phosphorus, Chlorine. The IUPAC name is Phosphorus pentachloride

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3 years ago

Which element in period 2 has six electrons in its electron dot structure?

navik [9.2K]

Answer:

calcium

Explanation:

8 0

4 years ago

Latent heat is used to: 1. form chemical bonds. 2. change molecular structure. 3. change states of matter. 4. change the tempera

likoan [24]

Answer : The correct option is, (3) change states of matter.

Explanation :

Latent heat : It is defined as the heat required to convert the solid into liquid or vapor and a liquid into a vapor without changing the temperature.

There are two types of latent heat.

(1) Latent heat of fusion

(2) Latent heat of vaporization

Latent heat of fusion : It is defined as the amount of heat energy released or absorbed when the solid converted to liquid at atmospheric pressure at its melting point.

Latent heat of vaporization : It is defined as the amount of heat energy released or absorbed when the liquid converted to vapor at atmospheric pressure at its boiling point.

Hence, latent heat is used to change states of matter.

7 0

3 years ago

Convert 2.39 x 1022 molecules of water into moles of water

torisob [31]

Answer:

$0.0397\ \text{mol}$

Explanation:

Number of molecules of water = $2.39\times 10^{22}$

$N_A$ = Avogadro's number = $6.022\times 10^{23}\ \text{mol}^{-1}$

Number of moles is given by

$\dfrac{2.39\times 10^{22}}{6.022\times 10^{23}}$

$=0.0397\ \text{mol}$

The number of moles of water is $0.0397\ \text{mol}$ .

6 0

3 years ago

Draw the major organic product(s) of the reaction of p-bromoaniline with HNO2, HCl.

NARA [144]

Answer:

The major product from this reaction is 4-bromobenzene diazonium chloride.

Explanation:

The reaction of p-bromoaniline with HNO2 and HCl produces diazonium salt. When primary aromatic amines are nitrosated with nitrous acid in the presence of a strong acid such as HCl, diazonium salts are frequently formed. The diazonium salts are a crucial step in the production of halides and azo compounds. The necessary reaction mechanism is depicted in the illustration in the diagram below.

3 0

3 years ago