Chemistry Unit 1

Question 1

2.842 sample of a gaseous compound of boron and chlorine occupies 0.153 L particular temperature and pressure. It decomposed to give 0.664 g of solid boron enough chlorine gas to occupy 0.688 L at the original temperature and pressure. Determine the empirical formula and molecular formula of the compound?

Answer 1

1. convert the mass of each element to moles
2. divide each mole by the smallest number of moles and round to the nearest whole number

3.