When the calculation (2.31)(4.9795x10^3)/(1.9971x10^4) is performed, how many significant digits should be reported for the answer?

What material does not melt at any temperature

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

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.