. Which gases are responsible for causing pollution and what are its effects on our environment?

What mineral is this? color: varies streak: colorless indistinct/fracture luster: non fluoresces

Acompound containing nitrogen and oxygen is decomposed in the laboratory and produces 1.78 g of nitrogen and 4.05 g of oxygen. part a calculate the empirical formula of the compound.

In the following reaction, oxygen is the excess reactant. sicl4 + o2 → sio2 + cl2 the table shows an experimental record for the above reaction. experimental record trial starting amount of sicl4 starting amount of o2 actual yield of sio2 1 120 g 240 g 38.2 g 2 75 g 50 g 25.2 g part 1: calculate the percentage yield for sio2 for trial 1. also, determine the leftover reactant for the trial. show your work. part 2: based on the percentage yield in trial 2, explain what ratio of reactants is more efficient for the given reaction.