Wednesday
June 19, 2013

# Posts by ana

Total # Posts: 856

chemistry
thank you!

chemistry
calculate the OH- concentration in (a) 1.0M NH3 and (b) a solution that is 1.0M in NH3 and also 1.0M in NH4Cl. (Kb = 1.8 x 10^-5 for NH3)

chemistry
thanks!

chemistry
when ammonia is added to Zn(NO3)2 solution, a white precipitate forms, which dissolves on the addition of excess ammonia. But when ammonia is added to a mixture of Zn(NO3)2 and NH4NO3, no precipitate forms at any time. Suggest an explanation for this difference in behaviour.

Algebra 2
i actually have two questions. - the edge of one cube is 4 m shorter than the edge of a second cube. the volumes of the two cubes differ by 1216m^3. find the edge of the smaller cube. - the sum of the squares of the two larger of three consecutive even integers is 12 less than...

Math Algebra 2
A rectangular garden is fenced on three sides with a wall forming the fourth side. the total length of the fence is 70m. the area if the garden is 600m^2. find the dimensions of the garden.

algebra (parabolas)
to find the axis of symmetry you must use the formula x=-b/2a which in (1. a=1 b=0 c=9) 1.x=-b/2a = o/1(2) 0/2 =0 your axis of symmetry would be 0 and to find out if it goes upward or downward you must plug in more numbers to get more cordinates

Algebra 2
The question says to make a statement about Log A over B & Log B over A & prove it. How do I answer?

algebra
A man wants to build a rectangular pen in which to keep his dog. If he uses one side of his barn, what is the maximum area that he can enclose with 80 meter of fencing?

Calculus
Find the slope of the tangent to the curve y^2=x^3/(xy+6) at (6,3)

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