A solution is prepared by dissolving 55.55g of NH4Cl into enough water to make 250.0 mL of solution. calculate the molarity.

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

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