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Aleks04 [339]
3 years ago
14

PLEEAASSEE HELP ITS ALREADY WAY PAST DUE AND ILL GIVE BRAINLIEST

Chemistry
1 answer:
Softa [21]3 years ago
6 0

Answer:  

A. unexpected change in odor

Explanation: Common physical changes include melting, change of size, volume, color, density, and crystal form. Example the classic baking soda and vinegar reaction provides evidence of a chemical change due to the formation of a gas and a temperature change.

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In the first 85.0 s of this reaction, the concentration of no dropped from 1.12 m to 0.520 m .

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The speed at which a chemical reaction takes place is the rate of the reaction. It is the concentration change per unit time of a reactant in a reaction.

Since the concentration of NO reduces to half its initial concentration in 85 seconds that is from 1.12m to 0.520m, it can be said that 85 seconds is the half life interval for the reaction, <u>Hence on average, </u><u>half reaction</u><u> is completed in the time interval of </u><u>85 seconds</u><u>.</u>

To learn more about rate of a reaction from the given link below,

brainly.com/question/12172706

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