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ehidna [41]
3 years ago
5

Henry is in the community investigating sources of chemical energy for his science experiment. Select the best examples of chemi

cal energy Henry can use.
A gas station and people playing hopscotch
A squirrel eating acorns and a fire burning
Someone reading a book and eating a sandwich
Someone sliding down the slide and someone drinking water
Chemistry
2 answers:
djverab [1.8K]3 years ago
8 0
B it seems as a fire is better then the rest
Julli [10]3 years ago
6 0

Explanation:

Determine whether the following symbols are universal or contextual. In "The Nightingale and the Rose,"

Oscar Wilde uses a red rose as a symbol for love. In To Kill a Mockingbird, Harper Lee uses a mockingbird as a symbol for innocence.

In A Little Princess, Frances Hodgson Burnett uses hot buns as a symbol for the connection between the main character and a poor street child.

In "The Water of Life," the Brothers Grimm use water as a symbol for life.

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Drugs they have been devoloped to kill bacteria are called
34kurt

Answer:

Explanation:

Antibiotic

3 0
3 years ago
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when heating copper in the final step, the bright copper color changes to a dull brown. will the percent recovery be too high or
jasenka [17]
<span>When heating copper in the final step, the bright copper color changes to a dull brown. I think this process will make the percent recovery low because a change in color can mean some reacted. Hope this answers the question. Have a nice day.</span>
5 0
3 years ago
2S+3O2=2SO3. If 4moles of sulfur reacts with 9. 5 moles of oxygen, how many moles of oxygen would remain after the reaction?
natali 33 [55]

Answer: 3.5 moles

Explanation:

For every 2 moles of sulfur consumed, there are 3 moles of oxygen consumed.

This means that sulfur is the limiting reactant, meaning that 2(3)=6 moles of oxygen will be consumed.

Thus, 9.5-6=3.5 moles of oxygen will remain.

7 0
3 years ago
Write nuclear symbols for each of the isotopes Carbon-14 Cobalt-60 Gold-197 Uranium-235
Marina CMI [18]

Answer and explanation:

The nuclides with the same atomic number, but different mass numbers are isotopes.

So, in this case, each species will have the same atomic number and a different mass number, that will be the same that it is written in the name of the element:

\begin{gathered} -\text{ Carbon-14:}C_6^{14} \\  \\ -\text{ Cobalt-60: }Co_{27}^{60} \\  \\ -\text{ Gold-197:  }Au_{79}^{197} \\  \\ -\text{ Uranium-235: }U_{92}^{235} \end{gathered}

5 0
1 year ago
How can you explain therma expansion in terms of kinetic energy ? please help
nata0808 [166]

Answer:  

Heat causes the molecules to move faster (heat energy is converted to kinetic energy), which means that the volume of a solid or a liquid. ... The particles in the air do not have more kinetic energy than particles in the mercury, because they are the same.

Explanation:

I hope this help you!

7 0
3 years ago
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