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Natasha_Volkova [10]
3 years ago
6

Which career area in chemistry applies new discoveries to practical applications useful for consumers?

Chemistry
1 answer:
levacccp [35]3 years ago
5 0
I think it would be D
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What is the total amount of work done when Danny lifted 25 pounds of weight over 5 meters and applying 30- Newtons of Force? ​
MariettaO [177]

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Definition and Mathematics of Work

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Potential Energy

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Which of the following have a neutral charge
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neutrons have a neutral charge

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4 years ago
For the reaction, a → b, the rate constant is 0.0208 m-1 sec-1. How long would it take for [a] to decrease from 0.100 to 0.0450
goldfiish [28.3K]

First, assume the order of the given reaction is n, then the rate of reaction i.e. \frac{dx}{dt}=k\times[A]^{n}

where, dx is change in concentration of A in small time interval dt and k is rate constant.

According to units of rate constant, the reaction is of second order.

\frac{1}{[A]_{t}}-\frac{1}{[A]_{o}} = kt   (second order formula)

Put the values,

\frac{1}{0.04590 m}-\frac{1}{0.100 m} =0.0208 m^{-1}s^{-1} \times t  

 22.23 m -10 m =0.0208 m^{-1}s^{-1} \times t

\frac{12.23 m}{0.0208 m^{-1}s^{-1}} = t

t= 587.9 s

Hence, time taken is 587.9 s






5 0
4 years ago
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Kobotan [32]
Don’t know this oneeeeeeeeeeeee
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3 years ago
Macho Mel can lift 200 kilograms with case. How much is this in pounds?
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he can lift 440.925 pounds

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