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NemiM [27]
3 years ago
13

In Earth’s mantle there are convection currents. The convection currents flow in a _________ shape. As the hot magma ___________

_____, the colder magma ___________________. These convection currents are a continuous_______________. This means that convection currents will _____________ stop because they have a constant source of heat energy. Convection currents move the lithosphere and cause many events on the surface including_____________ and _____________.
Words:
rises
eventually
system
earthquakes
triangular
circular
tornadoes
volcanoes
never
sinks
Chemistry
1 answer:
muminat3 years ago
6 0

Answer:

4

5

2

6

3

1

6

7

.......

.

.

.

.

.

..

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How long, in seconds, would it take for the concentration of A to decrease from 0.860 M to 0.310 M?
kogti [31]

Answer:

2.038 seconds.

Explanation:

So, in the question above we are given the following parameters in order to solve this question. We are given a rate constant of 0.500 s^-, initial concentration= 0.860 M and final concentration= 0.310 M,the time,t =??.

Assuming that the equation for the first order of reaction is given below,that is;

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Therefore, e^-kt = B/B°.

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Where B° and B are the amount of the initial concentration and the amount of the concentration remaining, k is the rate constant and t = time taken for the concentration to decrease.

So, we have; time taken,t = ln( 0.860/.310)/0.500.

==> ln 2.77/0.500.

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