How many atoms are in 0.75 moles of zinc

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?