Water has a mass per mole of 18.0 g/mol, and each water molecule (H_2O) has 10 e

Question

Water has a mass per mole of 18.0 g/mol, and each water molecule (H_2O) has 10 electrons. a) How many electrons are there in 2 liters of water? (A liter is 1.00 times 10^-3 m^3) 69e+26 electrons (b) What is the net charge of all these electrons? 1.07e+8 C Water has a mass per mole of 18.0 g/mol, and each water molecule (H_2O) has 10 electrons. (a) How many electrons are there in 2 liters of water? (A liter is 1.00 times 10^-3 m^3) 6.69e+26 electrons (b) What is the net charge of all these electrons? 10.7e+7 C

Explanation / Answer

Part B )

Net charge of all the electrons, = N * (charge of each electron)

Charge of one electron = -1.6 * 10-19 C.........(Please be careful about the negative symbol)

Net charge = (6.69* 1026) * (-1.6 * 10-19 C)

Net charge = -1.07 *108 C

The answer is right, except for that you missed out the negative symbol in the answer.

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