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For each of these pairs of half-reactions, write a balanced equation for the overall cell reaction and calculate the standard cell potential, E^0cell.
A. Half-reactions: Cd^2+(aq) + 2e^- —> Cd(s) Cr^2+(aq) + 2e^- —> Cr(s)
Cell reaction:
E^0cell
B. Half-reactions: Fe^2+(aq) + 2e^- —> Fe(s) Br2(g) + 2e^- —> 2Br^-(aq)
Cell reaction:
E^0cell
Use a truth table to determine whether the given statement is a tautology or self-contradiction.
1. ~[p ∧ ( ~p v q)] v q
2. [p ∧ ( ~p v q)] v q
A ball of mass 200g dropped from a height of 2m, hits the horizontal floor and rebound to a height h below it's initial position. If the coefficient of restitution is 0.8, calculate the value of h
Molar conductivity of 0.005M Kcl is 144Scm^2mol. Calculate its electrolytic conductivity in SI units (Sm^-1).
A quality control engineer knows that a flash drive produced by a company pass the company’s standard 95% of the time. He usually does a random checking of 20 flash drives from the day’s production and approves the whole production when no more than flash drives fail to meet the standards. What is the probability that the quality control engineer accepts the whole production for the day?
write a program to print numbers from 1 to n in each row forming a rectangular pattern of m rows and n columns using numbers
The principal claims that the students in his school are above average intelligence. A random sample of 35 IQ scores have a mean score of 110.5. Is there sufficient evidence to support the principal’s claim? The mean population IQ is 100 with a standard deviation of 25. Use =1%.
An 80kg man is parachuting and experiencing a downward acceleration of
2.5m/s2 . The mass of the parachute is 5 kg.
(i) What is the value of the upward force exerted on the parachute by the air?
(ii) What is the value of the downward force exerted by the man on the parachute?
suppose that no of accident occuring on high way is possion with random vairables lamda=3
Calculate the force on the wire
shown in the figure, given B=1.50 T, L=5.00
cm, and I=20.0 A.
