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Marrrta [24]
3 years ago
10

True or false guys! Please help!

Chemistry
2 answers:
topjm [15]3 years ago
6 0
False. Your welcome earthling
LenaWriter [7]3 years ago
4 0
False because the kenetic energy is non proficient
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Explain how temperature and precipitation are affected by latitude and the sun's rays.
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Latitude and Temperature

At the equator, the Sun's rays are most direct. This is where temperatures are highest. At higher latitudes, the Sun's rays are less direct. The farther an area is from the equator, the lower its temperature.
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What kind of heat is it when you cook an egg in a frying pan?
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I may be totally wrong but I’ll make a guess to it being thermodynamics.
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Mrs. Marlow's class is conducting an investigation of a mixture of sand, iron filings, and salt. They were told that they must s
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A mixture can be separated by looking at the physical properties of the components of the mixture.

Since salt is soluble in water, it can be added to the mixture to dissolve the salt.

The bar magnet is now introduced in order to remove the iron filings since they are attracted by a magnet.

The solution is filtered to separate the sand from the salt solution.

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Hence the mixture has been separated into its components using their individual physical properties. Option A is the correct answer.

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8 0
3 years ago
If the rate of decrease for the partial pressure of N2H4N2H4 in a closed reaction vessel is 70 torr/htorr/h , what is the rate o
german

Answer:

r_{NH_3}=140torr/h

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

N_2H_4 (g) + H_2 (g) \rightarrow 2 NH_3

Thus, in terms of pressures, the rate becomes:

-r_{N_2H_4}=\frac{1}{2} r_{NH_3}

Thus, the rate of change for the partial pressure of ammonia turns out:

r_{NH_3}=2*(-r_{N_2H_4})\\r_{NH_3}=2*[-(-70torr/h)]\\r_{NH_3}=140torr/h

The rate of decrease of partial pressure of urea is taken negative as it is a reactant whereas ammonia a product which has 2 as its stoichiometric coefficient.

Best regards.

7 0
3 years ago
How many grams are in 2.5 moles of Carbon
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According to the periodic table, carbon's molar mass is 12.011 grams per mole (that's the small number under the element).  So, just multiply like this to get the answer:

(2.5\ mol\ C)(\frac{grams\ C}{12.011\ mol\ C})=0.20814\ g\ C

So, there are approximately 0.208 grams in 2.5 moles of carbon.
6 0
3 years ago
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