An average home in colorado requires 2.00 x 107 kj of heat per month. how many grams of natural gas (methane) must be burned to supply this energy?
ch4(g) + 2o2(g) → co2(g) + 2h2o(l) δh°rxn= –890.4 kj/mol

What is the empirical formula of vanadium 1 oxide given that 20.38 grams of vandium combines with oxygen to form 23.58 grams of the oxide

What is the volume occupied by 10.0 dm3 of gas at standard pressure after it has been compressedat constant temputure to 500.0 kpa?

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.