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Elena L [17]
3 years ago
7

A mass of 14 kg is accelerated at 2m/s2 for a distance of 5 meters. How much energy is required?

Chemistry
1 answer:
soldi70 [24.7K]3 years ago
3 0
Force = mass * acceleration

= 14 * 2 = 28N

Work done (energy) = Force * distance

= 28 * 5 = 140J
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mrs_skeptik [129]

Answer:

1.22 x 10²⁵ molecules CO₂

Explanation:

To find the amount of molecules, you need to multiply the number of moles by Avogadro's Number. Avogadro's Number is a ratio which represents the amount of molecules per every 1 mole. It is important to arrange this ratio in a way that allows for the cancellation of units (since you are going from moles to molecules, moles should be in the denominator). The final answer should have 3 sig figs like the given value.

Avogadro's Number:

6.022 x 10²³ molecules = 1 mole

 20.2 moles CO₂           6.022 x 10²³ molecules
---------------------------  x  --------------------------------------  = 1.22 x 10²⁵ molecules
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1 year ago
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vichka [17]

The section "Cute Beavers Also Cause Trouble" that is MOST important to include in the section's summary is They can also be moved or killed if they cause trouble.

<h3>Are beavers a threat to humans?</h3>

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Hence, The section "Cute Beavers Also Cause Trouble" that is MOST important to include in the section's summary is They can also be moved or killed if they cause trouble.

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5 0
2 years ago
To separate a mixture of iron filings and salt, the most efficient method would be
GaryK [48]

Answer:

Explanation:

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I do hope I helped you! :)

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Hoochie [10]

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kirill115 [55]
C. a metal and a nonmetal
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