How do scientists think the activity of the "Siberian Traps" changed the chemistry of the oceans?

We just started a new lesson in chemistry and everyone hates it and i dont get it one bit. i hate school. h el p.balanced equationc3h8+5o2-> 3co2+4h2o1.) if you start with 14.8g of propane(c3h8) and 3.44g of oxygen, which is the limiting reactant -check my answer 2.)what mass of excess reagent is left over? 3.)what mass of carbon dioxide can be made? 4.)what mass of water is produced?

An experimental procedure requires a 10 ml of acid to be dissolved

Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas