Question: what is the molecular formula of arsenic(iii) sulfide in the gas phase?
Answer: What is the molecular formula of arsenic(III) sulfide in the gas phase? This should essentially be an effusion-rate problem. I know the equation is \dfrac{r_x}{r_y}=\sqrt{\dfrac{M_y}{M_x}}, where r is the rate of effusion and M is molar mass.