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3 years ago

Which energy change occurs during boiling?

Chemistry

2 answers:

mylen [45]3 years ago

8 0

Answer: Heat energy is absorbed by the substance

Explanation: Boiling is an endothermic process in which water molecules absorbs heat energy to break bonds. During boiling the amount of heat absorbed is used to break chemical bonds of water having its temperature remains in constant. The absorption of heat energy increases the kinetic energy of molecules which allows them to escape into the gaseous phase.

satela [25.4K]3 years ago

4 0

Heat energy is absorbed by the substance

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In order to do multiple trials of an experiment, _____. A. change your hypothesis B. do the experiment more than once C. revise

Arisa [49]

B. do the experiment more than once

Explanation:

To do a multiple trials of an experiment, it is best to do the experiment more than once.

Experimental trials are mere replication of the procedures in an experiment.

Most hypothesis on which experiments are based must be repeatable.
When experiments are repeated through several trials, their accuracy is increased.
Multiple trials clearly makes it easy to make meaningful deductions from an experimental process.

Learn more:

Experiment brainly.com/question/5096428

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3 years ago

2C3H7OH + 9O2 -> 6CO2 + 8H2O

MAVERICK [17]

Answer:

Up to $18\; \rm mol$ $\rm CO_2$ .

Explanation:

The equation for this reaction: $2\; \rm C_3 H_7 OH + 9\; O_2 \to 6\; CO_2 + 8\; H_2O$ is indeed balanced.

Notice that the coefficient of $\rm C_3 H_7 OH$ is $2$ while that of $\rm CO_2$ is $6$ .

Therefore, each unit of this reaction would consume $2$ units of $\rm C_3H_7OH$ while producing $6$ units of $\rm CO_2$ . In other words, this reaction would produce three times as much $\rm CO_2\!$ as it consumes $\rm C_3H_7OH\!$ .

If all that $6\; \rm mol$ of $\rm C_3H_7OH$ molecules are actually consumed through this reaction, three times as many $\rm CO_2$ molecules would be produced. That corresponds to $3 \times 6\; \rm mol = 18\; \rm mol$ of $\rm CO_2\!$ molecules.

6 0

3 years ago

Examine the following electron configuration:

maksim [4K]

Answer:

The answer to 12 is Indium... you should be able to figure out the rest from there with help from the internet since i've given you the element

Explanation:

I would usually do it but I got a ton of hw

5 0

3 years ago

Determine the number of three egg omelets that can be prepared from 4 dozen eggs

AveGali [126]

4 dozen eggs= 48 eggs

48 eggs/ 3 eggs

16 three egg omelets can be made

5 0

3 years ago

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The reaction rate low is independent of which of the following charactetics • Reactor type] • Temperature • Concentration of com

Firlakuza [10]

Answer: In the reaction rate law the rate is expressed in terms of concentrations of species. It is important to know how much time a reaction will take to complete itself. It depends on some factors. Temperature, concentration of component, catalyst and pressure. On increasing these factors the rate of reaction of a respective reaction increases. It doesn't depends upon reactor type.

4 0

3 years ago