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2 years ago

11

Select the correct answer. Which electromagnetic wave has the longest wavelength? microwaves O B. infrared rays O C. X-rays radi

o waves

1 answer:

icang [17]2 years ago

7 0

Answer:

microwaves

Explanation:

Microwaves and radio waves are the longest wavelengths while the shortest are gamma rays and x-rays

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Ionic bonds happened between?

Leni [432]

Answer:

$\large \boxed{\sf metal \ and \ non \ metal}$

Explanation:

Ionic bond is a bond between metals and non-metals with strong forces of attraction between charged ions.

5 0

2 years ago

On the addition of HI

victus00 [196]

Answer:

$CH_3-CH(I)-CH(CH_3)-CH_3$

$I-CH_2-CH_2-CH(CH_3)-CH_3$

Explanation:

Given the compound $CH_2=CH-CH(CH_3)-CH_3$

The steps of reaction:

$HI \longrightarrow H^+ + I^-$

$CH_2=CH-CH(CH_3)-CH_3 + H^+ \longrightarrow CH_3-CH^+-CH(CH_3)-CH_3$

<u>But this intermediate product has a resonance: </u>

$CH_3-CH^+-CH(CH_3)-CH_3 \longleftrightarrow C^+H_2-CH2-CH(CH_3)-CH_3$

The reaction with I-

$CH_3-CH^+-CH(CH_3)-CH_3 + I^- \longrightarrow CH_3-CH(I)-CH(CH_3)-CH_3$

$C^+H_2-CH2-CH(CH_3)-CH_3 + I^- \longrightarrow I-CH_2-CH_2-CH(CH_3)-CH_3$

8 0

2 years ago

Which of these is the largest quantity?

RideAnS [48]

Answer:

I would have to say the United States debt.

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3 years ago

Suggest why sodium wasn’t produced until the early 19th century.

AlexFokin [52]

Answer:

The reason is that sodium attaches itself very strongly to other elements. Its compounds are very difficult to break apartand also because it is so reactive.

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2 years ago

State the basicity of this acid HCOOH

Katena32 [7]

Answer:

The basicity of HCOOH (otherwise known as formic acid) is 1

Explanation:

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2 years ago