A compound contains only C, H, and N. Combustion of 42.0 mg of the compound produces 40.2 mg CO2 and 49.3 mg H2O. What is the empirical formula of the compound

Consider the equilibrium system: 2icl(s) ⇄ i2(s) + cl2(g) which of the following changes will increase the total amount of of cl2 that can be produced? all of the listed answers are correct decreasing the volume of the container removing the cl2 as it is formed adding more icl(s) removing some of the i2(s)

Can someone me with questions 12 and 13 plz.

Can you me with this i really appreciate it