How many moles are present in a 24.5 gram sample of k2cr2o7?

What are transitions between a liquid and a solid called? identify which way they are transitioning

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions. what elemental classification does oxygen belongto? done

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)