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son4ous [18]
3 years ago
13

Which of the following decomposition reactions is/are correct?

Chemistry
2 answers:
qwelly [4]3 years ago
7 0
<span>A) 2NaOH -> 2Na + O2 + H2
is not correct since Na is unstable

B) 2NaOH -> 2Na + H2O + 1/2O2
is not correct since Na is unstable

C) 2NaOH -> Na2O + H2O
is correct since N2O is stable

D) 2NaOH -> 2Na + H2O2
is not correct since Na is unstable</span>
maxonik [38]3 years ago
5 0

<u>Answer:</u> The correct statement is only reaction C is correct.

<u>Explanation:</u>

Decomposition reaction is defined as the reaction in which one large compound breaks down into smaller compounds.

NaOH is a base known as sodium hydroxide. The decomposition reaction for sodium hydroxide follow the equation:

2NaOH\rightarrow Na_2O+H_2O

By Stoichiometry of the reaction:

2 moles of sodium hydroxide decomposes into 1 mole of sodium oxide and 1 mole of water.

Hence, the correct statement is only reaction C is correct.

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What is NOT a condition needed for a hurricane to form?
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Answer:

The first condition is that ocean waters must be above 26 degrees Celsius (79 degrees Fahrenheit). Below this threshold temperature, hurricanes will not form or will weaken rapidly once they move over water below this threshold.

8 0
3 years ago
The empirical formula of styrene is CH; its molar mass is 104.1 g/mol. What is the molecular formula of styrene?
Natalija [7]
You got the answer correct. If you would double check
given:C (12 g/mol) H (1 g/mol). 

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and for C2H4
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7 0
3 years ago
Read 2 more answers
3. How many atoms in 3.91 moles of sodium?
Gala2k [10]

Answer:

Explanation:

The formula for sodium is Na. It does not form a molecule in some way.

1 mol Na = 6.02*10^23 atoms

3.91 mol = x                                    Cross multiply

x = 3.91 * 6.02 * 10^23

x = 23.65 * 10^23

x = 2.365 * 10^24

Scientific notation is always expressed as a number 1 ≤ x < 10

3 0
3 years ago
A sample of ice is heated continuously until it becomes a liquid, and then a gas. Its temperature is recorded throughout and a g
padilas [110]

Answer:

The answer to your question is: C. The specific latent heat of fusion

Explanation:

A. The specific latent heat of vaporization  Specific latent heat of vaporization indicates the transition from liquid to vapor, but we are not looking for this definition. This answer is wrong.

B. The specific heat indicates the amount of heat needed to increase the temperature of water 1°C, so this answer is wrong.

C. The specific latent heat of fusion . This heat indicate the transition from solid ie to liquid, so this is the right answer.

D. The internal energy measures the energy of the molecules of a substance, so this answer is wrong.

3 0
3 years ago
Use the periodic table or graphic in lesson. what is the atomic number of carbon?
DochEvi [55]
Carbon's atomic number is 6
4 0
3 years ago
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