In a laboratory investigation, an HCI (aq) solution with a pH value of 2 is used to determine the molarity of KOH (aq) solution. A7.5-milliliter sample of the KOH (aq) is exactly neutralized by 15.0 milliliters of the 0.010 M HCI (aq). During this laboratory activity, appropriate safety equipment is used and safety equipment is used and safety procedures are followed.

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

"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"

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.