8. (06.02 MC) A list of changes is shown.
A. Temperature decreases
B. Intermolecular bonds become weaker
C. Freezing
D. Intermolecular bonds become stronger
E. Evaporation
F. Temperature increases
G. Movement of molecules slows down
H. Molecules vibrate faster
Which of the above changes would be accompanied by a decrease of the kinetic energy of particles in a liquid? (5 points)
O A, B, C, and H
O A, C, D, and G
OB, E, F, and H
OB, C, E, and G

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

honesty and integrity.

inspire others.

commitment and passion.

good communicator.

decision-making capabilities.

accountability.

delegation and empowerment.

creativity and innovation.

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