Which best describes how heat energy moves within the system?

2 answers:

8 0

Heat can be transferred from one place to another by conduction in solids, convection of fluids like liquids or gases, and radiation. A temperature difference in a system causes heat to move from higher to lower temperatures

Arada [10]3 years ago

7 0

Answer: B

Heat always travels from warmer areas to cooler areas in the form of radiation or convection currents due to the temperature difference. You could kind of think of this movement like diffusion: travelling from a higher concentration to a lower one (if you take biology). This is how a gas heats up a pan on the stove or a radiator warms a room

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Is straining cooked pasta from water a physical or chemical separation

Leviafan [203]

It is a physical separation.

Only chemical separation involves the changing of substances and their bondings, which usually involves the use of heat or electricity. Meanwhile, physical changes does not require breaking the bonds of substances or changing a substance to another, common examples of physical separations are such as filtration or distillation.

Since straining pasta from water does not require breaking the pasta or water to other substances, plus heat and electricity is not involved, therefore this is a type of physical separation.

7 0

4 years ago

Which plant has a longer orbit. Jupiter or Saturn

romanna [79]

Answer:

Saturn

Explanation:

One whole orbit is a year on earth. Well it takes Saturn 10,759 days to make one whole orbit. It takes Jupiter 4,333 days to make a whole orbit.

7 0

3 years ago

With solutions of strong acids and strong bases the word strong refers to

Anastaziya [24]

The answer is degree of ionization. I'm guessing you have already taken the quiz.

5 0

3 years ago

What kind of waves have more energy than others?

jeyben [28]

Answer:

Gamma ray

Explanation:

Radio waves have low energy photons, microwave photons have a little more energy than the radio waves, infrared photons have more energy than the microwave, then visible, ultraviolet, X-rays, and, the most energetic of all is the gamma-rays

7 0

4 years ago

Provide the reagents necessary to carry out the following conversion.

Alika [10]

Answer:

see explanation below

Explanation:

First, you are not providing the reaction to do the conversion. However, in picture 1, I attached a reaction that match perfectly with the description of this question, so I hope it could be.

Now picture 2, shows you the correct steps of conversion, now let me explain a little here the mechanism:

The first step in all options is the same. Those reagents works to do an oxidation of the methyl group to a carboxilic acid, and then, we transform toluene into benzoic acid. Now the second step in the first option involves Cl2 in light, and this only works to do halide alkylation in acyclic chains, so this would not work in the reaction to get the final product. In option 2, we have Cl2/FeCl3, and this will promote a friedel craft alkylation, and Chlorine will go to the para position of the ring, so we can exclude this option. However option 3 and 4 uses SOCl2, and this is often used to convert the hydroxile group of a molecule into an halide, so these two options works in the second step.

Now, for the step 3, option 4 uses grignard reagent with (CH3CH2)2CH2MgBr as reagent, but this will only form a larger chain and the CH3CH2 will not break, so, this option is discarted, and finally option 3 will be the correct one. Picture 2 shows you every step.

6 0

3 years ago