2 years ago

What is the mass percentage of O in C₂H₄O₂? Provide an answer to two decimal places.

Chemistry

1 answer:

nasty-shy [4]2 years ago

6 0

Answer:

53.29%

Explanation:

The molar mass of C2H4O2 is 60.05g and the 2 O's are 32.00g

so 32.00/60.05= 0.53288925895

and that as a decimal rounded to the nearest hundredths is 53.29%

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What is the mass of an original 5.60-gram sample of iron-53 that remains unchanged after 25.53 minutes?

olga_2 [115]

Answer is 0.7 g

Reason: Given: mass of Fe = 5.60 gWe know that, half life of Fe-53 = t1/2 (Fe-53) = 8.51 min.
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3 years ago

Ac sample of octane that has a mass of 0.750 g is burned in a bone calorimeter. As a result, the temperature if the calorimeter

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3 years ago

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Alchen [17]

Explanation:

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