The passage of a current of 0.750 A for 25.0 min deposited 0.369 g of copper from a CuSO4 solution. From this information, calculate the molar mass of copper.

INFO 1020: Analytics II Class Notes Mon. 1/11 Chapter 5 Cont. • Word Problems • Types of Problems • General: P(x)s are different •Formulas: •ΣP(x) = 1 •E(x) = ▯ •VAR(x) = σ² = Σ(x-E(x))² ⋅ P(x) STDEV(x) = σ = Sqrt (Σ(x-E(x))² ⋅ P(x)) • • Uniform: All P(x)s are the same • Binomial Probability Distributions • Properties •Binomial Trial: Any trial that has just two outcomes •The trial is repeated n times •Trials are independent •Two trial outcomes: success and failure •Probability of success, p, is constant for each trial •The random variable, x, is the total possible number of successes •x ϵ [0,n] • Example: •Let the trial be toss a die •Let n = 4 Let success be “1” • Page▯ of ▯6 •Let failure be “not 1” •p = 1/6 •Probability Distribution (List the Xs and the P(X)) • Probabilities formula: P(x) = nCx (p^x) (1-p)^n-x • On calculator: Math, Probability, Combination • Example: P(3) = 4C3 (1/6)^3 (5/6)^1 = 0.0153 •Probability via Excel • =BINOM.DIST(x,n,p,0) •Shortcuts to means and variances • E(x) = ▯ = np = 4(1/6) = .667 • VAR(x) = σ² = np(1-p) = 4(1/6)(5/6) = .5556 • STDEV(x) = σ = sqrt (np(1-p) = 4(1/6)(5/6)) = .74 • Poisson Probability Distributions • Properties •Some events e