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Snowcat [4.5K]
3 years ago
11

Which of the following is true for all chemical reactions

Chemistry
1 answer:
Zolol [24]3 years ago
5 0
The answer to the question is C
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Which of the following molecules is nonpolar?
Dvinal [7]

Answer:

CO2

Explanation:

  • There are two types of molecules
  1. Polar
  2. Non polar

Non polar molecules are insoluble in water .

7 0
2 years ago
Which option is an element <br> A: carbon dioxide <br> B: Water <br> C: Air<br> D: Carbon
Ivenika [448]

Answer:

D: Carbon

Explanation:

The periodic table lists all the known elements. When looking at it, the only choice you will find is carbon. Therefore, carbon is the element.

Carbon is also by itself, just C.

Water is H2O, which is a molecule due to the 2 different elements.

Carbon Dioxide is CO2, which is a molecule due to the 2 different elements.

Air is just a mixture of different gas molecules, so therefore it is not an element.  

3 0
3 years ago
Read 2 more answers
In an experiment, students were given an unknown mineral. The unknown mineral was placed in 150 ml of water. Once in the water,
Dahasolnce [82]

Answer:

<h2>15 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

But from the question

volume = final volume of water - initial volume of water

volume = 165 - 150 = 15 mL

We have

density =  \frac{225}{15}  = 15 \\

We have the final answer as

<h3>15 g/mL</h3>

Hope this helps you

5 0
2 years ago
HELP PLEASE ILL GIVE REWARD!!!!!!!!!!!!!!!!
laila [671]
All the information is answered/given in the paragraph except that the study doesn’t show cells in their natural habitat!
7 0
3 years ago
Which option correctly describes the enthalpy of formation?
leonid [27]

Answer: Endothermic reaction.

Explanation:  A chemical reaction in which energy is absorbed from the surrounding environment.

4 0
3 years ago
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