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3 years ago

Which statement about the earth atmosphere is true

1 answer:

8 0

I believe it to be C

Explanation: The concentration of carbon dioxide in Earth’s atmosphere is currently at nearly 412 parts per million (ppm) and rising. This represents a 47 percent increase since the beginning of the Industrial Age, when the concentration was near 280 ppm, and an 11 percent increase since 2000, when it was near 370 ppm.

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A sample of gas occupies 1.2 L at 12.0oC. Assuming pressure remains the same, what would be the volume (in L) of this gas at 67o

Levart [38]

Answer:

6.7

hope it help

4 0

3 years ago

How many grams of sodium hyrdioxde are in 251.0ml f 0.600m

Furkat [3]

Answer:

There are 6.024 grams of sodium hydroxide in the solution.

Explanation:

$Molarity=\frac{Moles}{Volume (L)}$

$Moles (n)=Molarity(M)\times Volume (L)$

Moles of sodium hydroxide = n

Volume of sodium hydroxide solution = 251.0 mL = 0.251 L

Molarity of the sodium hydroxide = 0.600 M

$n=0.600 M\times 0.251 L=0.1506 mol$

Mass of 0.1506 moles of NaOH :

$40 g/mol\times 0.1506 mol = 6.024 g$

There are 6.024 grams of sodium hydroxide in the solution.

4 0

3 years ago

Which statement best summarizes what happens during cellular respiration?

morpeh [17]

Answer:

Explanation:

B and D have to do with plants

and C has nothing to do with cellular resporation.

8 0

3 years ago

Read 2 more answers

*SCIENCE*

ICE Princess25 [194]

Their radiation facilitates nuclear fusion in young stars.

7 0

3 years ago

Read 2 more answers

Koby decides to change the amount of vinegar. He will keep the amount of baking soda constant at ½ teaspoon. He will run three t

Wittaler [7]

Answer: When baking soda and vinegar are combined, a new substance is produced. The carbon dioxide gas soon foams up in the mixture. Carbon dioxide, water, and sodium acetate are generated when sodium bicarbonate and acetic acid react.As Kobe adds additional baking soda and vinegar, the reaction will also become stronger.

Explanation: <em>well to be completely honest I don't see any answer choices so I'm going to assume that this is a writing question</em>

5 0

3 years ago