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Just a question, does anyone know why the mass spectrum of CCl4 does not have a molecular ion peak at 152? But instead it appears at 117.

Can i just plug in all the values in the equation a= g[(m))/((M)]- f/((M)), and a = 0 and solve for m?

Homework Statement Two masses are connected over a pulley which has a friction resistance of 0.147 N. What is the minimum mass difference to cause the pulley system to have a non-zero acceleration when released from rest? Total Mass = 250 g Homework Equations a= g[(m))/((M)]-...

Just a quick question about error analysis. Moles of Calcium ions in 10 mL = 6.0 x 10-4 ± 0.5 x 10^-5 mols I'm suppose to scale this number to Moles of Calcium ions in 250mL. So when I multiply by 25, do I multiply the error value as well? Or does it remain the same?

http://img80.imageshack.us/img80/1017/26119684vg0.jpg This graph shows changes that occur in the amounts of ribulose 1,5 - bisphosphate (RuBP) and phosphoglyceric acid (PGA) in leaf mesophyll cells during a six minute interval of sunlight with the concentration of carbon dioxide being...

yea thanks but, i was able to find out what to do.

do the logs cancel?

yea it is that but i didnt know how to do the thingie

kk sooo log 1944/ log 2n = log 486/2 / log n Do the logs cancel?

kk ty

How would you do that though =/

Homework Statement http://img66.imageshack.us/img66/811/untitled1fk8.th.jpg I have no idea what to do, can someone point me in the right direction?

Just split it into two equations, and find the distance it takes to stop each one.

kk goott it thanks

vsintheta/2