The Ph of 0.3mol/l of a weak base is 10.66, calculate kb.
I was thinking of using ph and calculate the concentration of H ions and then calculate poh and OH, but don't know what to do next. Any ideas?
the thing with my little procedure is that it doesn't seem right, it seems like I am missing something important, or what i think the procedure should be doesn't make any sense :S
What would be an experimental procedure to determine Ksp of PbCl2 at lab temp, I think 22-25 degrees (the reaction being PbCl2 (s) ---> Pb + 2 CL). I am thinking that you'd take random amounts of Pb and Cl and wait for it to reach equilibrium and then somehow figure out how much of each chemical...
do u have any lengths? Cause if you do you can just us tanθ and that would give you the answer...im doing a similar question and i figured out through other equations that tanθ is how u get it. So if the length of the incline was 4m and the height was 3 then ur answer would be 3/4.
Hey, i was just wondering if anyone can explain why static friction appears to be higher then kinetic friction on a stationary object, which is on an incline?
~thx:confused:
ok i got the length of the moat (22 m) ! thanks for ur help... but i have one more question that i hope u can answer... how would i figure out the velocity at impact?
ok ... now i have figured out the time ... it is 2.4 s ... how would i figure out the length of the moat? would i have to use the x components now? and if i do how would i do that?
ok well what i have so far is my vertical and horizontal velocities, which are 8.0 m/s and 8.9 m/s respectively...and i don't know where to go from here... i tried using d=v1t + 1/2 at*2 but when i put it in the quadratic formula i can't get it to work :confused: so i don't know where to go from...
Kinematics HMWK help!
hi, I am in gr 12 physics and i need help in a kinematics question about Projectile motion... here is the question:
"a medievil prince is trapped in a castle wraps a message around a rock and throws it from the top of the castlewall with an initial velocity of 12 m/s...