Answer both questions i will mark you brainliest if it is
which of the following would be true if something was at absolute zero?
choices are:
a. the molecules that make up a sample wouldn't be moving.
b. the molecules that make up a sample would be moving very slowly
c. the molecules that make up a sample would be moving really fast
if the molecules of a sample speed up, what else happens?
choices are:
a. the temperature decreases
b. the temperature increases
c. the temperature stays the same

1st Question: A

2nd Question: B

Explanation:

The 1st answer would be A because if a sample is at absolute zero then the sample is at its lowest temperature none of the molecules would be able to move, this is because lower temperature= lower kinetic energy.

The 2nd answer would be B because if a sample has more temperature it speeds up it has more temperature and more kinetic energy, meaning it would move faster because there is more temperature.

"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"

just did the assignment and the answer was #1 +2 n