And give the answer to question 2? REVIEW & CHECK FOR SECTION 1-8 1. Which of th

Question

And give the answer to question 2? REVIEW & CHECK FOR SECTION 1-8 1. Which of the following has the highest themal energy? Which of the following has the highest thermal energy? (a) (b) 1. 1.0 g of ice at 0 °C (c) 1.0 g of liquid water at 100 °C (d) 1.0 g of water vapor at 100 °C- 1.0 g of liquid water at 25 °C 2. Which of the following is an incorrect statement? (a) A mixture of H2 and O2 has lower chemical potential energy than H20. (b) Input of energy is required to split an H2 molecule into two H atoms. (c) Water at 30 °C has a higher thermal energy than the same amount of water at 20 °C. Inless otherwise noted, all art on this page is Cengage Learning 201S.

Explanation / Answer

2 )   a ) is wrong .

H2 , O2 are in gaseous state more randomness is present so . they have higher energy .

potential energy:          it is due virtue of its position.

PE = m g h

kinetic enrgy :    this is due possessed by an object in motion

KE = 1/2 * m v^2

1) For example, the water stored in a dam possesses potential energy by virtue of its height (position). When this water is allowed to fall, its potential energy gets converted into kinetic energy.

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