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# 20. The density of liquid water is 0.997 g/mL at 25°C. a. Calculate the mass of 250.0 mL (about a cupful) of water. b. How many moles of water are in 250.0 mL of water? Hint: Use the result of (a). c.

20. The density of liquid water is 0.997 g/mL at 25°C.

a. Calculate the mass of 250.0 mL (about a cupful) of water.

b. How many moles of water are in 250.0 mL of water? Hint: Use the result of

(a).

c. Calculate the volume that would be occupied by 2.000 mol of water at 25°C.

d. What mass of water is 2.000 mol of water?