If a person consumes 5.33 × 105 kcal in a day and one barrel of oil can produce 3.70 × 106 kcal, what is the equivalent of energy consumed per year by that person in terms of barrels of oil?

How can you use chemical equations to predict the products of the reaction you can carry out?

What is the mass of 4 molecules of co2

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter