Matter is anything that has mass and takes up space. Which units of measurement can you use to describe these two properties?

A.
seconds and kilometers
B.
milligrams and square meters
C.
grams and millimeters
D.
kilograms and cubic millimeters
E.
yards and liters

Option D. kilograms and cubic millimeters

Explanation:

From the above options, only kilograms and volume conform to the definition of matter.

Kilogram is the unit of measurement of Mass ( i.e quantity of matter Mass present in an object).

Cubic Millimetres is a unit of measurement of volume( i.e the place occupied by Matter)

"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"