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3 years ago

Mr. Watson's students brought him a cake on his birthday because he was their favorite teacher. Before he blew out the candles,

Chemistry

2 answers:

katovenus [111]3 years ago

7 0

Answer: OB The candles are able to burn

Explanation: OA The cnadles are thin is a description, OC The candles are 10 cm tall is descriptive , OD The candles are blue is descriptive

Murrr4er [49]3 years ago

3 0

Answer:

Explanation:

The candles are able to burn

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The equation for the chemical reaction shown below is not balanced. What number should replace the question mark to balance this

malfutka [58]

B. the number 3.
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2 years ago

Is the process of a liquid changing into a solid when cooling a chemical reaction?

Alona [7]

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The energy emitted after freezing, known as the fusion enthalpy, is a latent heat, which is precisely the same as the energy used to melt the same volume of solid.

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3 years ago

Which element is in group 2 and period 7 of the periodic table

bekas [8.4K]

Hey
Sorry, But There Is No 7th Element in group two. only six which is Radium.
~Spades15

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3 years ago

Chlorofluorocarbons (CFCs) are no longer used as refrigerants because they destroy the ozone layer. Trichlorofluoromethane (CCl₃

Daniel [21]

Answer:

The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.

Explanation:

Entropy :It is defined as amount of energy which is unable to do work or the measurement of randomness or disorderedness in a system.

$S=\frac{Q}{T(Kelvins)}$

Molar heat of molar vaporization of Trichlorofluoromethane = 24.8 kJ/mol

Temperature at which Trichlorofluoromethan boils , T= 296.95 K

The molar entropy of the evaporation of Trichlorofluoromethan :

$=\frac{24.8 kJ/mol}{296.95 K}=0.083516 kJ/mol K = 83.516 J/molK$

The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.

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2 years ago

Which of the following shows a correct base pairing in DNA

statuscvo [17]

DNA bop it does not say it in my test

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2 years ago