chemistry
calculate the pH of a 0.50 m solution of HCN. Ka for HCN is 4.9*10^-10 (The chemical equation for this.)
physics
A ball whirls around in a vertical circle at the end of a string. The other end of the string is fixed at the center of the circle. Assume that the total energy of the ball-Earth system remains constant. (a) What is the tension in the string at the bottom? (Use the following a...
Chemistry
Thanks you Dr.Bob222. So the overall idea is that dissociation decreases molar mass and association does the opposite when a solute dissolves in a solvent. (How do you identify if either reaction occurs? Just wondering.)
Chemistry
So in this case, that a small amount of your unknown failed to dissolve in the t-butanol, it would effect the molar mass, just depending on the mass of both substances?
chemistry
Lab on Determining hard water Not sure if I answered this currently, not completely sure how to explain either. If a student has a non-zero blank correction, but forgets to include that correction in his/her calculations:? a. Would his/her calculated [EDTA] be correct, too hi...
chemistry
Thanks
chemistry
Lab on Determining hard water Not sure if I answered this currently, not completely sure how to explain either. If a student has a non-zero blank correction, but forgets to include that correction in his/her calculations:? a. Would his/her calculated [EDTA] be correct, too hi...
MSD
Pat and Kris are roommates. They spend most of their time studying (of course), but they leave some time for their favorite activities: making pizza and brewing root beer. Pat takes 4 hours to brew a gallon of root beer and 2 hours to make a pizza. Kris takes 6 hours to brew a...
MATH
x/9 < or = -3 x times 1/9 < or = -3 x< or = -3/1/9 x< or = -27 sorry i don't have the symbols on my keyboad, but i hope this helped
Algebra 1
m= y2-21/x2-x1 m= -6-(-4)/4-6 m=-2/-2 therefore m= 1 the answer is b) good luck :)
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