Which of the following is not part of daltons atomic theory

Answers

Answer 1

Answer: Different elements are composed of different atoms.

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The reaction between C2H6 and Cl2 is by addition

Answers

The reaction between C2H6 and Cl2 by addition is C2H4Cl2 or dichloroethane. It must be under the presence of sunlight because halogen such as chlorine cannot easily react with the sigma bond of alkane such as ethane.

Answer:

addition

Explanation:

In which process does a solid change directly into a vapor?(1) condensation (3) deposition
(2) sublimation (4) solidification

Answers

In Sublimation, a solid changes directly into a vapor.

In which compound does chlorine have the highest oxidation number?(1) NaClO (3) NaClO3(2) NaClO2 (4) NaClO4

Answers

Answer:

NaClO₄

Solution:

Let us calculate the oxidation state of Chlorine in each compound one by one;

1) NaClO

O.N of Na = +1

O.N of O = -2

So,

(+1) + (Cl) + (-2) = 0

1 + Cl - 2 = 0

Cl = -1 + 2

Cl = +1

2) NaClO₃

(+1) + (Cl) + (-2)3 = 0

(+1) + (Cl) - 6 = 0

1 + Cl - 6 = 0

Cl = -1 + 6

Cl = +5

3) NaClO₂

(+1) + (Cl) + (-2)2 = 0

(+1) + (Cl) + (-4) = 0

1 + Cl - 4 = 0

Cl = -1 + 4

Cl = +3

4) NaClO₄

(+1) + (Cl) + (-2)4 = 0

(+1) + (Cl) + (-8) = 0

1 + Cl - 8 = 0

Cl = -1 + 8

Cl = +7

Which statement explains why water is classifiedas a compound?
(1) Water can be broken down by chemical means.
(2) Water is a liquid at room temperature.
(3) Water has a heat of fusion of 334 J/g.
(4) Water is a poor conductor of electricity.

Answers

Answer: Option (1) is the correct answer.

Explanation:

Compounds are the substances which contain two or more different elements.

Similarly, water is a compound as it is made up when two hydrogen atoms combine with one oxygen atom. Compounds can be broken down with the help of chemical reactions.

Hence, the statement water can be broken down by chemical means explains why water is classified as a compound.

I believe the correct answer from the choices listed above is option 1. Water is classified as a compound because it can be broken down by chemical means. This process is called electrolysis where the products are H2 and O2. Hope this answers the question. Have a nice day.

On the pH scale, a solution with a pH of 7 would be classified as which of the following? A weak acid, weak base, neutral, or pure H2O?