About how many electrons are in 0.3 gram of water (H₂O)? A) 10²³ B) 10²¹ C) 10²⁵ D) 10¹⁹

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Quizplus · Accepted Answer

0.3 gram of water contains 0.3/18 moles of water, which is 1.67 x 10^-2 moles. Each water molecule contains 10 electrons, so 1.67 x 10^-2 moles of water contains 1.67 x 10^-2 moles x 10 electrons/mole = 1.67 x 10^-1 moles of electrons. 1.67 x 10^-1 moles of electrons is equal to 1.00 x 10^23 electrons.

About How Many Electrons Are in 0