How many mols are present in 15 g of Mg(OH)₂

What does Ronald Reagan mean by " the most terrifying words in the english language are I'm from the government and i'm here to help"

A biochemist has 100 mL of 0.10 M solution of a weak acid with a pKa of 6.3. She adds 6.0 mL of 1.0 M HCl, which changes the pH to 5.7. What was  the pH of the original solution?

what amount of heat energy is produced when 1.0 kg of CO2 (g) is produced durint the combustion of octane

The questions is "A linear relation passes through the points (-40,19) and (24,91). Determine equations for the relation in slope intercept form, general form and slope point form." I am having trouble convering the slope intercept form which is y=1.125(x)+64 for the points provided, to general form. Ax+By+C=0 is general form and because the slope is 1.125 or 1.1/8 i am having trouble converting so that the numbers are whole. 

How do I start a problem liket this?

 A 10kg object falls from a height of 20m.  What is the kinetic energy it has half way through its fall, and what is the speed of the object?

lines 23–24: When all is well, we take things for granted; adversity proves to be an advantage in forcing us to see life as it really is. What does Gloucester mean?    

·      Gloucester compares himself to the bear and recognizes that he is doomed. Why would Gloucester feel that comparing himself to the bear was valid? From King Lear Act 3 scene 7

Ki

Is this a good thesis statement? "Perspectives change when people mature and find out the truth" or is it not arguable.

What does a TAG statement mean?