What does this expression represent?
kb for h2s
ka for h2s
kb for s2–
kb for hs–
ka for hs–

Which of the following is not true about the atomic model of substances?

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community