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elena-s [515]
1 year ago
5

A 3.53-g sample of aluminum completely reacts with oxygen to form 6.67 g of aluminum oxide. find percent composition

Physics
1 answer:
katrin2010 [14]1 year ago
7 0

The mass percent composition of aluminum is 52.9% in aluminum oxide.

Mass of the aluminum = 3.53 g

Mass of the aluminum oxide = 6.67 g.

The mass percent of a substance is the mass of the substance divided by the mass of the compound into 100.

Aluminum reacts with oxygen to form aluminum oxide.

The overall balanced equation for the reaction is,

Aluminum + Oxygen→Aluminum \: oxygen

4Al +3O _{2}→2Al _{2}O _{3}

The mass percent composition of aluminum in the aluminum oxide is,

Mass  \: percent = \frac{ Mass \:  of \:  the  \: substance}{ Mass  \: of \:  the \:  compound} \times 100

Mass  \: percent =  \frac{Mass  \: of \:  the  \: aluminum}{ Mass \:  of \:  the \:  aluminum \: oxide } \times 100

Mass \:  percent  =  \frac{3.53}{6.67 } \times 100

= 52.9 %

Therefore, the mass percent composition of aluminum is 52.9% in aluminum oxide.

To know more about aluminum oxide, refer to the below link:

brainly.com/question/25869623

#SPJ4

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Answer:

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Explanation:

here we know that torque = I×α

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   no of revolutions = \frac{\theta}{2\pi}  = 1,601.1943.

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The direction of electric field is as same as electric force. But it is negative charge. So, the direction of electric field is in upward direction.

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Answer:

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We need to find the final position of the car at the time t = 1.5 seconds

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So we can find the final velocity by using the rule:

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add 3.2 for both sides

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Answer:

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3 years ago
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