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IrinaK [193]
3 years ago
13

B. -C- -C- | | | -C-C-C-C- | | | -C- 1 TT -C-

Chemistry
2 answers:
djyliett [7]3 years ago
6 0

Answer:

..

Explanation:

..

prisoha [69]3 years ago
4 0

Answer:

?

Explanation:

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How to melt white chocolate chips in the microwave?
Otrada [13]

Answer:

umm put it in a bowl and put it in the microwave and melt it

Explanation:

3 0
2 years ago
Which is an example of an exothermic process?
Gwar [14]

1) Answer: A hot pack feels warm when chemicals in it combine.

Explanation: Reactions or process in which heat is released(produced) are known as exothermic reactions or process and those in which the heat is absorbed are known as endothermic reactions or process.

If a beaker feels cools when chemical in it react then it means the chemicals have absorbed the heat energy from its surroundings and so it is an example of an endothermic process.

A hot pack feels warm when chemicals in it combine means the energy is released in the chemical reaction and so it is an example of an exothermic process.

Plants use the sun's energy for photosynthesis which is a process of forming food for the plants. Energy acts as a reactant in this process and so it is an example of endothermic process.

Frying an egg by heating it on a stove is an example of an endothermic process as the heat is required to fry the egg.

So, the only exothermic process is the second one, "A hot pack feels warm when chemicals in it combine."

2) In the given equation, heat is written as a product means the heat is released in the equation and so it is an example of an exothermic reaction.

So, the correct choice is the last one " It is exothermic because energy is released."

5 0
3 years ago
Read 2 more answers
0.20 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 4.5 L of solution. What is the pH of this solution?
amid [387]
Thats allllllll otttt but ill help

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8 0
2 years ago
In an electron dot diagram of propane (C3H8), how many double bonds are present?
NeX [460]

Answer:- none

Explanations:- For naming hydrocarbons we use the suffix -ane, -ene and -yne.

-ane is used when we have only single bonds between all carbons. -ene is used if there is any double bond between two carbons and the -yne is used if there is any triple bond between two carbons.

The given name of the compound is propane. It ends at -ane and so it's an alkane and must have single bonds between all the carbons it has. So, there are zero double bonds present in C_3H_8 .

This is also clear from the below lewis dot structure of the compound.


4 0
3 years ago
Read 2 more answers
Why is melting an ice cube a reversible physical change?
Dmitriy789 [7]

Answer:

Because you can freeze the water you melted back into a ice cube.

Explanation:

7 0
2 years ago
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