Is oxygen an exhaustible natural resource ?

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.