A 5.50 gram sample of a hydrate of sodium carbonate is heated, cooled, and massed. The resulting anhydrous solid has a mass of 2.15 g. What is the correct formula and name of the hydrated compound?

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius

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.

Rank the following four acids in order of increasing bronsted acidity : h2f+ , ch3oh, (ch3)2oh+ , ch3sh2+