What three temperature measurements Inust you make to calculate the specific heat of a sample using a calorimeter?​

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

How many grams of mgbr2 are needed to produce 75g or metal?

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.