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Talja [164]
3 years ago
13

Help i need to pass this class

Chemistry
1 answer:
navik [9.2K]3 years ago
4 0

Answer: It would be B

Explanation: a magnet moves from north to south

due to pole attraction is more in the north region

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Reaction is
-Dominant- [34]
According  to the task, you  are proveded with patial pressure of CO2 and graphite, and here is complete solution for the task :
At first you have to find n1 =moles of CO2 and n2 which are moles of C 
<span>The you go :
</span>CO2(g) + C(s) \ \textless \ =\ \textgreater \  2CO(g)

n1 n2 0
-x -x +2x
n1-x n2-x 2x Kp=P^2 (CO)/Pco2
After that you have to use the formula PV=nRT
 Kp=(2x)^2/n1-x
Then you have to solve x, and for that you have to use <span>RT/V
And to find total values:</span>P(total)=n(total)*R*T/V
I am absolutely sure that this would be helpful for you.
7 0
3 years ago
At what point is a base no longer added during a titration?
nordsb [41]

Answer:

when the pH increases suddenly in the flask

Explanation:

I think it's right. :)

6 0
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Give an example of a change that the ecosystem was able to recover from and return to equilibrium.
Tanzania [10]

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The Fox is at the top of the food chain; so, the other animals could increase in population and the fox could return

4 0
3 years ago
In which block of the periodic table is uranium (U) found?
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Roman55 [17]

Answer:

Periods on the periodic table of elements

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In the periodic table of elements, there are seven horizontal rows of elements called periods. The vertical columns of elements are called groups, or families. (See also The Periodic Table: Metals, Nonmetals, and Metalloids.) In each period (horizontal row), the atomic numbers increase from left to right.

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