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Bad White [126]
2 years ago
11

What property can be used to determine if a sample is a pure substance or a mixture?

Chemistry
1 answer:
Yuliya22 [10]2 years ago
7 0

Answer:

Melting point

Explanation:

Pure substances have sharp melting and boiling points while impurities lower the melting point and raise the boiling point

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Convert 9.78 gallons toliters
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Calculate the time it takes for an object moving with a speed of 13m/s to travel 50 m
kykrilka [37]

Answer:

<h3>The answer is 3.85 s</h3>

Explanation:

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t =  \frac{d}{v}  \\

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From the question we have

t =  \frac{50}{13}  \\  = 3.846153...

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<h3>3.85 s</h3>

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7 0
3 years ago
The equations given in the problem introduction can be added together to give the following reaction: overall: N2O4→2NO2 However
Murljashka [212]

Answer:

Reverse the 2 NO_2 \longrightarrow 2 NO + O_2  reaction

Explanation:

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Overall:

N_2O_4 \longrightarrow 2 NO_2

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2 NO + O_2 \longrightarrow 2 NO_2

N_2O_4 \longrightarrow 2 NO + O_2

Combining:

N_2O_4 + 2 NO + O_2\longrightarrow 2 NO + O_2 + 2 NO_2

N_2O_4 \longrightarrow 2 NO_2

4 0
3 years ago
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3 years ago
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