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3 years ago

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

3 years ago

Read 2 more answers

Give an example of a change that the ecosystem was able to recover from and return to equilibrium.

Tanzania [10]

Answer:

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?

Maurinko [17]

Uranium is in the "f" block, because it's external electron configuration is $5d^4$

6 0

3 years ago

Read 2 more answers

Periods on the periodic table are

Roman55 [17]

Answer:

Periods on the periodic table of elements

Explanation:

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.

6 0

4 years ago