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GaryK [48]
3 years ago
15

Electric fields can be seen by human eyes. O A. True O B. False

Chemistry
1 answer:
romanna [79]3 years ago
6 0

Answer:

False

Explanation:

Electric fields are invisible to the human eye, it is similar to magnetism and radio waves.

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In which of the following sets are the charges given correctly for all the
Ronch [10]

Answer:

B) K⁺, Sr²⁺ , O²⁻

Explanation:

Potassium is present in group one. It is alkali metal and have one valance electron.Potassium need to lose its one valance electron and form cation to get complete octet.

That's why it shows K⁺.

Sr is alkaline earth metal. It is present in group two. It has two valance electrons. Strontium needed to lose its two valance electrons and get stable electronic configuration.

When it loses its two valance electrons it shows cation with charge of +2.

Sr²⁺

Oxygen is present in group 16. It has sex valance electrons. It needed two more electrons to complete the octet. That's why oxygen gain two electron and form anion with a charge of -2.

O²⁻

3 0
3 years ago
Which of the following substances are not homogeneous mixtures?
Tanya [424]

Answer: it’s B

Explanation:

7 0
3 years ago
The molecule CO2 is arranged in a linear molecular geometry. TRUE FALSE
antiseptic1488 [7]

I would say true because the Valence Shell Electron Pairs will Repel each other. When they do they are forced to the opposite side of the Carbon atom giving CO2 a linear molecular shape. The CO2 bond angle will be 180 degrees since it has a linear molecular geometry.

sorry if im wrong

5 0
3 years ago
sound travels at 331m/s. How long would it take for sound to travel across lake tahoe, which is 21.6 miles long
vesna_86 [32]

Answer:

It would take sound <em><u>104.998 seconds</u></em> to travel across lake tahoe.

Explanation:

First let's convert the miles to meters, so, 21.6 miles = 34754.4 meters

Now, we will divide this number in meters by 331. So, 34754.4 / 331 = 104.998

And what will the unit be? Seconds will be the unit for time here so 104.998 seconds.

       

7 0
3 years ago
8. Which type of water reservoir could always provide fresh water?
Delicious77 [7]
D: tropical seas hope this helped
4 0
3 years ago
Read 2 more answers
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