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ValentinkaMS [17]
3 years ago
11

1.A space shuttle's wings are useless as it travels around the exosphere. Explain, in your own words, why the wings are so usele

ss and how the shuttles can move around.
2.Explain, in your own words, the thermosphere and the stratosphere are our hottest atmosphere layers.

3.Explain, in your own words, how and why “shooting stars” occur. For example, why and what causes meteors to burn up.

4.Explain, in your own words, the importance of our ozone layer in the stratosphere.

5.Explain, in your own words, why weather only occurs in the troposphere.

PLEASE HELP!!!!! Use your own words please! I will give the brainiest to the person who answers it!
Chemistry
1 answer:
Andrews [41]3 years ago
6 0

Thrust acts on the spacecraft and propels in the space.

<h3>How space shuttles move?</h3>

1. The force created by the shuttle's engines in expelling the burning fuel produces an equal thrust in the opposite direction. This thrust acts on the spacecraft and propels in the space.

2. The thermosphere and the stratosphere are our hottest atmosphere layers because these two layers are present near the sun as compared to other layers of atmosphere.

3. When the meteors hit the atmosphere, meteors rub against air particles and create friction which is heating the meteors. The heat vaporizes most meteors, creating what we call shooting stars.

Learn more about atmosphere here: brainly.com/question/24925283

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Consider the reaction below to answer the following question: This reaction is an example of: A. A Michael reaction B. A Robinso
Anestetic [448]

The reaction is missing, so i have attached it.

Answer:

C. An intramolecular aldol condensation

Explanation:

From the attached image showing the reaction, we can see that the left hand side of the reaction has 2 carbonyl groups which are the double bonds attached to the oxygen atoms.

Now, on the right hand side, we can see that a six member ring has been formed.

This 6 member ring is produced because one of the carbonyls on the left hand side was deprotonated at the alpha position thereby serving as a nucleophile, which then attacks the carbon in the other carbonyl.

This process is possible because it underwent the processes of deprotonation, intramolecular aldol addition, proton transfer and elimination to yield the right hand side product which is ɑ,β-unsaturated carbonyl compound.

Thus, the correct answer is option C

4 0
3 years ago
How many molecules are in 8 g of NAOH
My name is Ann [436]

Answer:

39.99711

Explanation:

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7 0
3 years ago
A sample of wood from the remains of a ship was found to contain 40.0% of C-14 as of ordinary wood found now. If the half-life p
kondaur [170]

Answer:

7628 y

Explanation:

Carbon-14 is radioactive and it follows the first-order kinetics for a radioactive decay. The first-order kinetics may be described by the following integrated rate law:

ln(\frac{[A]_t}{[A]_o})=-kt

Here:

[A]_t is the mass, moles, molarity or percentage of the material left at some time of interest t;

[A]_o is the mass, moles, molarity or percentage of the material initially, we know that initially we expect to have 100 % of carbon-14 before it starts to decay;

k = \frac{ln(2)}{T_{\frac{1}{2}}} is the rate constant;

t is time.

The equation becomes:

ln(\frac{[A]_t}{[A]_o})=-\frac{ln(2)}{T_{\frac{1}{2}}}t

Given:

\frac{[A]_t}{[A]_o} = \frac{40.0 %}{100.0 %}

T_{\frac{1}{2}} = 5770 y

Solve for time:

t = -\frac{ln(\frac{[A]_t}{[A]_o})\cdot T_{\frac{1}{2}}}{ln(2)}

In this case:

t = -\frac{ln(\frac{40.0\%}{100.0\%})\cdot 5770 y}{ln(2)}

t = 7628 y

3 0
3 years ago
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solmaris [256]

Answer:

Emission of heat or light, or a color change.

8 0
3 years ago
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What does a complete ionic equation look like?
leonid [27]

Answer:

All ionic substances are written as separate ions in solution

5 0
3 years ago
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