- Sum of distance of point from 2 points(-ac,0)and(ac,0)is 2a.prove X2/a2+y2/b2=1 where b2=a2-a2c2?

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You want to make 500 ml of a solution with a pH of 2.5. What volume of 12.0 M HCL will be required? What number match with the letters? How many spend time in amental institution? Why does salt raise the boiling point and lower the freezing point? How do you solve for x and find the measures of each angle?