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Sholpan [36]
3 years ago
8

20. What is the area of a piece of metal foil that measures 43.9 cm by 29.21 cm? Express the answer to

Chemistry
1 answer:
Aneli [31]3 years ago
4 0

Answer:

The correct answer is b. 1280 cm^2

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Charlotte is driving at 58.6 mi/h and receives a text message. She looks down at her phone and takes her eyes off the road for 4
kramer

Answer:   19.71 feet

Explanation:

Given:  Speed of Charlotte =58.6 mi/h

Since 1 hour = 3600 seconds

and 1 mile = 5280 feet

So, Speed of Charlotte = \dfrac{58.6\times5280}{3600}\approx85.95 mi/ sec

She looks down at her phone and takes her eyes off the road for 4.36 s.

Since , Distance = \dfrac{speed}{time}

So, Distance = \dfrac{85.95}{4.36}=19.71\ feet

Hence, Charlotte traveled  19.71 feet during this time.

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3 years ago
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Inessa [10]

Answer:

B. temperature decreases as altitude increases.

Explanation:

Just like in the lower reaches of the atmosphere, the troposphere, in the mesosphere, temperature decreases as altitude increases.

The mesosphere is the third layer of the atmosphere just above the stratosphere.

  • It begins at the top of the stratosphere and ends at the mesopause where the thermosphere begins.
  • The mesosphere is often referred to as the middle layer.

With increasing height, the temperature of the mesosphere decreases significantly. The top of the mesosphere is one of the coldest part of the earth atmosphere. This is as a result of increasing atmospheric cooling by carbon dioxide in this region of the atmosphere.

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3 years ago
Which postulate of Dalton's atomic theory is the result of the law of conservation of mass
creativ13 [48]

The postulate of Dalton's atomic theory which is a result of the law of conservation of mass is: Atoms are indivisible particles, which can neither be created nor destroyed in a chemical reaction.

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3 years ago
9. the answer is not 100.0(ect.), plese help me
ArbitrLikvidat [17]
2.56 is the answer !!!!
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2 years ago
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How many primary,secondary and Tertiary carbons are in the compound. 2,3-dimethyl pentane. And
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Answer:

5 primary carbon atoms

3 secondary carbon atoms

4 tertiary carbon atoms

6 hydrogen atoms

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3 years ago
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