A. The interactions between the molecules will become weaker. B. The molecules will collide more often.
Ο Ο Ο
C. The interactions between the molecules will become stronger.
D. The change in temperature will have little or no effect on the
interactions between the molecules.

i think The change in temperature will have little or no effect on the interactions between the molecules.

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

"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"