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SSSSS [86.1K]
3 years ago
6

Potassium chlorate decomposes to produce 20 g of solid potassium chloride. Oxygen gas is also produced. Which best describes the

mass of oxygen?
A.It is more than the mass of potassium chloride.
B.It is less than the mass of potassium chlorate.
C.It equals the mass of potassium chlorate.
D.It equals the mass of potassium chloride.
Physics
1 answer:
jok3333 [9.3K]3 years ago
6 0
Hi lovely,

The answer you're looking for would be B.
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Answer:

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Explanation:

The angular acceleration of the fan is given by:

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where

\omega_f is the final angular speed

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For the fan in this problem,

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Substituting,

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Now we can find the angular speed of the fan at the end of the 5th second, so after t = 5 s. It is given by:

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where

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\omega' = 0 + (45)(5)=225 rpm

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