The Theory of Continental Drift says that the continents were once joined together and are drifting apart. Who is given credit for coming up with this theory?
Charles Darwin
Alfred Wegener
Marie Curie
Alfred Wallace

Brad and his family like to go camping. they always take a gas lantern with them. the lantern can take fiuels but always puts out the same amount of light. brad has two different kinds of fuel for the lantern. how can he figure out which kind of fuel has more chemical energy that the lantern can turn into light? measure the brightness of the lantern using each kind of fuel by comparing it to the full moon. g measure the volume of the containers of fuel. measure how long the lantern stays lit on a fixed amount of fuel. measure the mass of each container of fuel using a balance scale. answer 12

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?