Not a timed or graded assessment. Quick answer will receive amazing review. Will need to be shown exactly how I should put in my answer.

Given the unbalanced chemical reaction:
[tex]aCF_4+bBr_2\rightarrow cCBr_4+dF_2[/tex]You need to determine the values of the constants a, b, c, and d that will balance the chemical reaction.
Note that to balance the reaction, the number of moles of elements on both sides of the reaction must be equal.
For Carbon elements:
a = c
For Flourine element:
4a = 2d
2a = d
For Bromine element:
2b = 4c
b = 2c
Recall that a = c, therefore, b = 2a
Replace c = a, b = 2a and d = 2a into the reaction to have:
[tex]\begin{gathered} \cancel{a}CF_4+2\cancel{a}Br_2\rightarrow\cancel{a}CBr_4+2\cancel{a}F_2 \\ 1CF_4+2Br_2\rightarrow1\text{CBr}_4+2F_2 \end{gathered}[/tex]This gives the balanced equation for the chemical reaction.