Question

Calculate the number of moles (of molecules) in the following samples. (A) 3.96 g H2O 0.22 mole (B) 10.18 g benzene, C6H6 0.13 mole (C) 21.42 g ethyl alcohol, C2H5OH 0.465 mole (D) 8.76x10^24 molecules CO2 14.54 mole (E) A sample of CO2 that contains 9.42x10^22 O atoms 0.2 mole

          Calculate the number of moles (of molecules) in the following samples.
(A) 3.96 g H2O
0.22 mole
(B) 10.18 g benzene, C6H6
0.13 mole
(C) 21.42 g ethyl alcohol, C2H5OH
0.465 mole
(D) 8.76x10^24 molecules CO2
14.54 mole
(E) A sample of CO2 that contains 9.42x10^22 O atoms
0.2 mole

Calculate the number of moles (of molecules) in the following samples.
(A) 3.96 g H2O
0.22 mole
(B) 10.18 g benzene, C6H6
0.13 mole
(C) 21.42 g ethyl alcohol, C2H5OH
0.465 mole
(D) 8.76x10^24 molecules CO2
14.54 mole
(E) A sample of CO2 that contains 9.42x10^22 O atoms
0.2 mole

Added by Jason L.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Anna D.

Step 1

We can use the formula: Number of moles = mass / molar mass The molar mass of H₂O is 18.015 g/mol. So, we can calculate the number of moles as follows: Number of moles = 3.96 g / 18.015 g/mol Number of moles = 0.22 moles For sample (B), we are given the mass Show more…

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Calculate the number of moles (of molecules) in the following samples: (A) 3.96 g H2O, 0.22 mole (B) 10.18 g benzene, C6H6, 0.13 mole (C) 21.42 g ethyl alcohol, C2H5OH, 0.465 mole (D) 8.76x10^24 molecules CO2, 14.54 mole (E) A sample of CO2 that contains 9.42x10^22 O atoms, 0.2 mole