# Posts by Nurcan

Total # Posts: 12

CHM 300
if the pKa of HCN is 9.21,what it its Ka?

Chemistry
we would build one spectrometer apparatus with webcam to analyze two different beers based on yeast or bitterness so which one would be easy/less time to analyze yeast or bitterness ? please expalin why :S

Chemistry
the standard free energy change for a chemical reaction is +13.3 kj/ mol. What is the equilibrium constant for the reaction at 125 degree C ? (R= 8.314 j/mol )

Help ?
Two carts, A and B, are connected by a rope 39 ft long that passes over a pulley P (see the figure). The point Q is on the floor h = 12 ft directly beneath P and between the carts. Cart A is being pulled away from Q at a speed of 3.5 ft/s. How fast is cart B moving toward Q at...

Sociology....
Explain why is the best method for studying human social development is by using Piaget's Theory of Cognitive Development?

Calculus
A right triangle with hypotenuse y and equal legs of size x has a perimeter of 36m. Express the area of the triangle solely in terms of the hypotenuse y.

Calcules
Find the following limit using algeraic manipulations. (Give excat asnwers). lim (4t^2 -t-1)/(t^2 -1) t--> -1

Calcules
Find thllowing limits using agebraic manipulations. a) lim (4t^2 -t-1)/(t^2 -1) = ? t--> -1

Calcules
find y" by implicit differentiation. 4x^3 + 3y^3 = 4 ===================================== 4x^3 + 3y^3 = 4 12x + 9yy' = 0 24x + 9(2yy')y' + 9y^2(y") = 0 y" = -6[4x-3y(y')^2] answer. (it this right? )