Calculate the kinetic energy (in joules) of a mole of water molecules traveling at 11.7 m/s.

Question

Chemistry

Damien Kidd

6 March, 17:36

Calculate the kinetic energy (in joules) of a mole of water molecules traveling at 11.7 m/s.

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Answers (1)

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Adalynn Walters · Answer 1

Atomic mass of hydrogen = 1 u

Atomic mass of oxygen = 16 u

Molecular mass of water=1*2+16*1

=18 u

Mass of 1 mole of water = 18 g=0.018 kg

KE=1/2mv²

=1/2*0.018*11.7²

=1.23 J (approx.)