Answer to Question #71406 in General Chemistry for Jennifer

Question

how many molecules are contained in 0.15 moles of water

Answer 1

The number of molecules in one mole of a covalent substance is 6.022 x 1023, known as Avogadro's number.
To determine the number of molecules, multiply the number of moles times 6.022 x 1023 molecules.
0.15 mol H2O x 6.022 x 1023 molecules/mol = 9.033 x 1022 molecules of water.

Answer: 0.15 mol H2O contains 9.033 x 1022 molecules of water.