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Ann [662]
3 years ago
12

Suppose you have an Avogadro's number of nitrogen atoms. How many grams does this represent? Enter your answer to one decimal pl

ace.
Chemistry
1 answer:
shusha [124]3 years ago
3 0

Answer:

2.3 x 10-23 g.

Explanation:

The mass of a single atom is the mass number, 14, is the mass in grams of one mole of carbon.

One mole of Nitrogen atom is 6.022 x 1023 atoms (Avogadro's number). This can then used to convert a nitogen atom to grams by the ratio:

mass of 1 atom / 1 atom = mass of a mole of atoms / 6.022 x 10^23 atoms.

mass of 1 atom = mass of a mole of atoms / 6.022 x 1023

mass of 1 N atom = 14 / 6.022 x 10^23 N atoms

mass of 1 N atom = 2.325 x 10^-23 g

The mass of a single Nitrogen atom is 2.325 x 10-23 g.

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<h3>Answer:</h3>

Distance = 7 m

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Work done = 175 Joules

Force exerted = 25 Newtons

Work done is the product of force exerted and the distance moved by a body.

Therefore;

Work done = Force × distance

Rearranging the formula we can work out the distance;

Distance = work done ÷ Force

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Thus, the grand piano was moved by 7 m across the living room .

On the other hand,

Power is the rate at which the work is done.

Therefore;

Power = Work done ÷ time

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Time = 14 seconds

Thus;

Power generated = 175 J ÷ 14 sec

                            = 12.5 J/s or watts

Hence, a power of 12.5 J/s was generated in moving the grand piano.

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