Answer:
C2H4Cl
Explanation:
The first step in obtaining the empirical formula is to divide the percent by mass of each element by its relative atomic mass;
C- 37.83/12, H- 6.35/1, Cl- 55.83/35.5
3.15, 6.35, 1.57
Divide through by the lowest ratio
3.15/1.57, 6.35/1.57, 1.57/1.57
2, 4, 1
Hence, empirical formula is C2H4Cl