Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chloride are needed to have 100.mg of na present

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

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.

How many grams of phosphorus are contained in 5.09 moles of phosphorus?