Need on interpreting
the bar chart below shows data for a system with two types of particles, x and y, in two connected regions, a and b. all of the x particles started in region a, and all of the y particles started in region b. which line graph best depicts the data in the bar chart?

-graph a

-graph b

-graph c

-graph d

C.

Step-by-step explanation:

We have two types of particles, x and y and two regions, A and B. The enunciated says that at the beginning all x particles are in A and all y particles are in B. Then, at the beginning, the 100% of x particles are in A and 0% of y particles are in A. So, the option A is discarded.

Now, the right part of the picture shows that after a while, 12 x particles go from region A to region B and 12 y particles go from region B to region A. Then, the percentage of x particles en region A will decrease and the percentage of y particles in region A will increase. That situation leaves us only with options B and C.

Finally, there will be 38-12 = 26 x particles in region A after the time and 12 y particles in region A. 26 and 12 represent two different percentages of 38 (the total) so, the graphs don't join. So, the answer is C.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy