How much solute can be dissolved in 100 g of solvent at 25°C?

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

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