Homework Statement
A 100.0mL buffer solution is 0.175M in HClO and 0.150M in NaClO.
Find the pH of the solution.
Homework Equations
Ka=10^-pH
([H30+][A-])/([HA])
-log([H30+]) = pH
The Attempt at a Solution
[HClO] [H3O+] [ClO-]
I .175 0 .150...
Homework Statement
At 600 K the equilibrium constant is 38.6 for the reaction
2 HI(g) <--> H2(g) + I2(g)
Start with a pressure of 0.725 atm consisting of only HI(g) at 600 K. Calculate the equilibrium
partial pressures of HI, H2 and I2.
Homework Equations
K=[C]^n[D]^n/[A]^n
Qp =...
After punching it through again I got the correct answer; I went wrong in the way I set up Hz; punching in 47.5^-1, since Hz = S^-1; but thats redundant...
Homework Statement
A generator with an rms voltage of 130V is connected in series to a resistor 3.65k\Omega and a capacitor 3.00\muF.
Using the frequency found in part A (47.5Hz), find the average power consumed by this circuit.
\phi = 17degrees
Homework Equations
Latex isn't...
Homework Statement
A "90-watt" light bulb uses an average power of 90W when connected to an rms voltage of 120V .
What is the resistance of the lightbulb?
Homework Equations
Pav=(V2rms/R)
The Attempt at a Solution
90W = 120V2/R
90W/120V2 = R
R = .00625\Omega
Homework Statement
Consider the circuit shown in the figure . Suppose the four resistors in this circuit have the values R1 = 12 \Omega, R2 = 6.4 \Omega, R3 = 7.0 \Omega, and R4 = 13 \Omega, and that the emf of the battery is \epsilon = 18V .
A. Find the current through each resistor...
Homework Statement
A uniform electric field of magnitude 8.5×105 N/C points in the positive x direction.
Find the change in electric potential energy of a 8.0 \muC
charge as it moves from the origin to the point (6.0 m , 0).
Homework Equations
1 N/C = 1 V/m
\DeltaU = q\DeltaV
E =...
Homework Statement
The figure shows an electron entering a parallel-plate capacitor with a speed of 5.4×106m/s. The electric field of the capacitor has deflected the electron downward by a distance of 0.618cm at the point where the electron exits the capacitor.
Find the magnitude of the...