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Tanya [424]
3 years ago
13

What percentage of the earth is water?

Chemistry
2 answers:
OleMash [197]3 years ago
4 0

Answer:

approximately 71%

olya-2409 [2.1K]3 years ago
3 0

Answer:71%

Explanation:

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Passenger airplanes take off in the troposphere but can eventually move into
zhuklara [117]
Well that is because the stratosphere has lower temperatures and low air density. This gives the airplane less air pressure and with low air density they can fly faster :) Hope this helps.
5 0
2 years ago
A compound with the empirical formula, ch2, has a molar mass equal to 84.2 g/mol. what is the molecular formula for the compound
MatroZZZ [7]
<span>Mass of CH2 = 12 + 2 = 14 g/mol The number of CH2s there are. So since the total mass is 84.2 g/mol. The solution is 84.2/14 = 6.012 thus the answer is 6 There are 6(CH2) So the molecular formula is C6H12</span>
7 0
3 years ago
How does water change as it freezes?
bagirrra123 [75]

Answer:

Hi there!

Your answer is:

A.

Explanation:

When frozen, water turns from a liquid to a solid! An example of this is a glass of water. You fill the glass with liquid tap water, and then put ice cubes in it. The ice cubes are solid and the tap water is liquid!

I hope this helps!

5 0
3 years ago
How many liters of a 1.5 M solution can you make if you have .50 mol of KCl?
vaieri [72.5K]

Answer:

The answer to your question is 0.33 liters

Explanation:

Data

Volume = ?

Molarity = 1.5 M

number of moles = 0.5

Formula

Molarity = \frac{number of moles }{volume}

Solve for V

Volume = \frac{number of moles}{molarity}

Substitution

Volume = \frac{0.5}{1.5}

Simplification and result

       Volume = 0.33 l

7 0
3 years ago
The number of electrons that can be held in the second orbit
pogonyaev
The number of electrons that can be held in the second orbit are 8
3 0
3 years ago
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