AP CHEMISTRY
A dilute solution of which acid is most likely to produce a reduction product other than H2 when it reacts with a metal? A)HF B)HCL C)HNO3 D)H2SO4 Answer is C. I know it has something to do with it producing oxygen, but I really don't understand where that comes from. Plea...
AP CHEMISTRY
Determine the volume of 0.125 M NaOH required to titrate to the equivalence point 25.0 mL of a 0.175 M solution of a monoprotic weak acid that is 20% ionized. Answer is 35.0 mL. How do you find it?! It's been a really long time since we talked about titrations. Please help (:
statistics
Margin of Error=z*(s/sq.root n) 25=2.32635(80/sq.root n) n= 55.4 Round UP= 56
AP CHEMISTRY
OH, thank you soo much. I forgot about the solid thing!
AP CHEMISTRY
C(s) + H2O(g) ⇌ CO(g) + H2 ΔH>0 For the system above at equilibrium, which changes will increase the amount of H2(g)? I. Adding C(s) II. Increasing the volume of the container III. Increasing the temperature The answer is II and III. I understand everything excep...
arithmetic
the sum of two distinct numbers is 20,and their G.M is 6. find the numbers
Math
Hi. please help me solve the ffg. differential equation: D^2y=3sinx-4y given y=0 and dy/dx=1 at x=pie/2 Need full solution. Tx
Math
Hi, Please help me solve the ffg. set of simultaneous equations using D-operators: dy/dx+2x-3y=1 dy/dx-3x+2y=e^-t
physics 203
a projectile is thrown with initial speed v0=25.0m/2 at an initial angle with the horizontal ANGLE=45 degrees. a. find the time when the projectile is at the maximum height. b. find the position(x,y) at the maximum height. c. at time T, find the components of the acceleration ...
chemistry
Suppose you have a solution containing both an iron ii salt and an iron iii salt. how would you proceed to identify both Fe 2+ and Fe 3+ in this solution?
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