2 years ago

How is Earth different from other planets?

1 answer:

5 0

OA. It has liquid water

Explanation: Earth is the only planet (as of now) that has organic life, and has liquid water on the surface.

Hope this has helped you!

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How much energy is required to completely melt a 250 gram ice cube that is already at 0 degrees Celsius? Show your work & un

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Answer:

Q = 83500J

Explanation:

$Q = L_{ice} *m$

$L_{ice} = 3.34*10^{5} \frac{J}{kg}$

$m = 250g = 0.25kg$

$Q = (3.34*10^{5} \frac{J}{kg})*(0.25kg)$

$Q = 83500J$

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2 years ago

After severe dust storms in the 1930s, practices were put in place to reduce soil erosion. Which

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Answer:

the answer is B) Planting native grasses in bare soil

Explanation:

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3 years ago

If you obtain 3.0 grams of aspirin from an experiment that could make no more than 3.14 grams, what is the percent yield?

Masteriza [31]

Answer:

96%

Explanation:

To find the percent yield, we can use this equation

$\frac{Actual}{Theoretical} *100$

The actual yield of aspirin is 3.0 and the theoretical is 3.14 in this case, so just plug the numbers in.

$\frac{3.0}{3.14} *100\\\\ =96$

Thus the percent yield is 96%

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3 years ago

A) ambos pertencem ao 5o período da Tabela Periódica;

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ground water / leaking storage tanks

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3 years ago