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2 years ago

2. Which sentence explains how air pollution is harmful? *

1 answer:

4 0

Answer:Air Pollution is when gas and fuel is released into the air and damages the environment. The Answer out of your answers would be C.

Explanation:

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HELP ASAP 20 OR MORE POINTS!!!!

pishuonlain [190]

<h2>YeS im Am fRom pLanet k12 And brinG anD imPortant MesSage </h2>

The answer to your question is, <u><em>There are only so many ways matter can arrange itself within that infinite universe.</em></u>

<h2><em>Also if your on the same test as me heres some other sTuff that was on my test </em></h2><h2><em> </em></h2>

Question 1 (1 point)

In Brian Greene's "A Physicist Explains Why Parallel Universes May Exist", what reason does Greene give for why he believes parallel universes may exist?

<em>Answer: There are only so many ways matter can arrange itself within that infinite universe.</em>

<em> </em>

Question 2 (1 point)

Choose the best explanation for why we experience the Mandela Effect.

<em>Answer: Our brains tend to fill in information that we cannot readily recall and make associations that are not true.</em>

Question 3 (1 point)

From the article "Time Travel Is A Fun Science Fiction Story But Could It Be Real?", Albert Einstein's Theory of Relativity is described as what?

<em>Answer: The pulling force of gravity causes space to curve and causes time to slow down.</em>

Question 4 (1 point)

From the video " Are Wormholes The Answer To Time Travel?", how are worm holes described?

<em>Answer: A tunnel in space connecting two regions very distant from each other. A "short cut" through space</em>

Question 5 (1 point)

Many scientists think human cloning is possible, so why haven't we made human clones yet?

<em>Answer: Human cloning is extremely controversial and many people believe it is unethical</em>

<h2><em>HOPE THIS HELPS ANYONE IF IT DOES THANK AND RATE FOR A FREE COOKIE :D </em></h2>

6 0

3 years ago

Read 2 more answers

GuDViN [60]

Answer:

A phosphorus atom forms a P3- ion by gaining three electrons.

here

4 0

2 years ago

What is the mass of 2.50 moles of NaCl

garik1379 [7]

Answer:

The mass of 2,50 moles of NaCl is 146, 25 g.

Explanation:

First we calculate the mass of 1 mol of NaCl, starting from the atomic weights of Na and Cl obtained from the periodic table. Then we calculate the mass of 2.50 moles of compound, making a simple rule of three:

Weight NaCl= Weight Na + Weight Cl= 23 g+ 35,5 g= 58, 5 g/ mol

1 mol ------ 58, 5 g

2,5 mol---x= (2,5 mol x 58, 5 g)/ 1 mol = <u>146, 25 g</u>

8 0

3 years ago

Isopentyl acetate (C7H14O2), the compound responsible for the scent of bananas, can be produced commercially. Interestingly, bee

lora16 [44]

Answer:

The answer to your question is:

a) 4.64 x 10 ¹⁵ molecules

b) 9.28 x 10 ¹⁵ atoms of O2

Explanation:

MW C7H14O2 = 84 + 14 + 32 = 130 g

a) 130 g of C7H14O2 ---------------- 1 mol of C7H14O2

1 x 10 ⁻⁶ g --------------- x

x = 7.7 x 10 ⁻⁹ mol

1 mol of C7H14O2 -------------- 6 .023 x 10 ²³ molecules

7.7 x 10⁻⁹ mol -------------- x

x = 4.64 x 10¹⁵ molecules

b) 130 g of C7H14O2 ---------------- 1 mol of C7H14O2

1 x 10⁻⁶ C7H14O2 ----------------- x

x = 7.7 x 10 ⁻⁹ mol of C7H14O2

1 mol of C7H14O2 --------------- 2 mol of O2

7.7 x 10 ⁻⁹ ---------------- x

x = 1.54 x 10⁻⁸ mol of O2

1 mol of O2 ----------------- 6.023 x 10 ²³ atoms

1.54 x 10 ⁻⁸ ---------------- x

x = 9.28 x 10 ¹⁵ atoms of O2

8 0

3 years ago

Think about a carbon atom that is released into the atmosphere from the burning of wood in a campfire. If it were to go through

viva [34]

1) <span>Step 5 A tree absorbs the carbon from the atmosphere into its leaves for photosynthesis. Inorganic carbon is turned into organic.
2) </span><span>Step 1 A caterpillar gets the carbon by eating the tree's leaves. Caterpillar use carbon for energy.
3) </span><span>Step 3 A bird gets the carbon by eating the caterpillar. Organic carbon shifts from one animal to another
4) </span><span>Step 4 The bird flies into a building and dies instantly. It falls to the ground.
5) </span><span>Step 2 The bird decomposes and the carbon is added to the atmosphere. Organic carbon turns into inorganic.
</span>

3 0

2 years ago