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snow_lady [41]
3 years ago
15

On average, how many hours of sleep do teenagers need each night? 7 hours 7.5 hours 8 hours 8.5 hours

Chemistry
2 answers:
Marrrta [24]3 years ago
5 0

Answer:

8 to 8.5 since that is the recommended and people usualy sleep more than that

Vera_Pavlovna [14]3 years ago
3 0

Answer:

7.5

Explanation:

i listened to the other dude and got it wrong but it showed this answer to be correct

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Color, odor, taste, etc
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3 years ago
HURRY ! the BEST I will give the brainliest​ ! Show you solution
omeli [17]

Vi = 0

Vf = 15

time = 8

a = ?

Vf = Vi + (a × time)

15 = 0 + (a × 8)

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Divide both side

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6 0
4 years ago
3. How many moles are in 1.49 x 1023 molecules of iodine?
tino4ka555 [31]

Answer:

<h3>The answer is 0.25 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{1.49 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{1.49}{6.02}  \\  = 0.247508305...

We have the final answer as

<h3>0.25 moles</h3>

Hope this helps you

7 0
3 years ago
If a steam reforming line processes methane at a temperature of
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Answer:

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