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3 years ago

How do greenhouse gases affect the heat flow into and out of Earth's atmosphere?

1 answer:

3 0

they allow solar energy to penerate the atmosphere and get absorbdd by thr earths surface thus warming it up. they absorb thr out going earths energy keeping thr energy warmth near the earths surface

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Starting with the stock solution of 6.0 M, how many milliliters of 6.0 M sulfuric acid are needed to make 450 mL of 1.2 M soluti

Lina20 [59]

<u>Answer:</u> The volume of stock solution needed is 90 mL

<u>Explanation:</u>

To calculate the molarity of the diluted solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the stock sulfuric acid solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted sulfuric acid solution

We are given:

$M_1=6.0M\\V_1=?mL\\M_2=1.2M\\V_2=450mL$

Putting values in above equation, we get:

$6.0\times V_1=1.2\times 450\\\\V_1=\frac{1.2\times 450}{6.0}=90mL$

Hence, the volume of stock solution needed is 90 mL

6 0

3 years ago

An average bushel of apples has a mass of 10 kg and contains 5 dozen apples.

Alina [70]

Answer:

Average mass of 6 apple = 1 kg

Explanation:

Given:

Average mass of 5 dozen apple = 10 kg

Find:

Average mass of 6 apple

Computation:

Average mass of 6 apple = [Average mass of 1 apple] x [6 apple]

Average mass of 6 apple = [10/(12 x 5)] x [6]

Average mass of 6 apple = 1 kg

3 0

3 years ago

An earthworm is slithering on a sidewalk towards a grassy lawn which organelles activity contributes most directly to muscle con

givi [52]

Answer:

3. Mitochondria

Explanation:

Numerous mitochondria are found in each muscle cell to provide metabolic energy for muscle contraction.

hope i helped (:

5 0

2 years ago

Which of these 2A elements has the largest atomic radius?

olya-2409 [2.1K]

Answer: Option (E) is the correct answer.

Explanation:

When we move from top to bottom in a group then there occurs an increase in atomic size of the atoms due to increase in the number of electrons.

For example, in group 2A elements beryllium is the smallest in size whereas radium being at the bottom is the largest in size.

Also, atomic number of beryllium is 4 and atomic number of radium is 88.

Thus, we can conclude that out of the given options radium is the 2A element which has the largest atomic radius.

5 0

3 years ago

What is conclusive evidence that mixing sugar in water is a physical change

Evgesh-ka [11]

Explanation:

1) their is no formation of new substance

2) the reaction can be reverse i.e if we heat sugar solution it we give us sugar and water.

6 0

3 years ago