What are the characteristics or properties that you can use to classify elements

Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f

What is the percent by mass of magnesium sulfate in mgso4.7h2o

There are approximately 15 milliliters (ml) in 1 tablespoon (tbsp). what expression can be used to find the approximate number of milliliters in 3 tbsp?