The molar mass of H2O is 18.02 g/mol. How many moles of H20 are present in 2.15 x 10^24 molecules?

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

How do you lengthen a pattern piece? (family and consumer science, sewing)

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.