Assuming a constant temperature, which sample below would you expect to be at the highest pressure?
A
B
С
ОА
B
Ос

The answer is C

Explanation:

This is pretty obvious, considering. Since they all are the same temperature and have the same amount of molecules, the place with the smallest amount of space has the highest amount of pressure. Because there is so little space, there is so much more pressure.

"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"