Question Solved1 Answer Help QUESTION 5 5.1 Balance the following chemical reaction in basic solution: Mno* + N2H4 MnO2 + N2 [5] 5.2 A 5.00-ml sample of brandy was diluted to 1.000 L in a volumetric flask. The ethanol (C2H5OH) in a 25.00-ml aliquot of the diluted soln was distilled into 50.00 ml of 0.020 M K Cr20., and oxidized to acidic acid with heating. After cooling, 20.00 mL of 0.1253 M Fe2+ were pipetted into the flask. The excess Fet was then titrated with 7.46 mL of the standard K2Cr20, to a diphenylamine sulfonic acid end point. [3] (a) Write a balanced redox reaction of ethanol with the dichromate ion Calculate the percent (w/v) C2H5OH (46.07 g/mol) in the brandy [6] (b)

Inhaled particles Two mechanisms for the deposition of inhaled particles in the airways are gravitational settling and inertial impaction, depicted in Figure P3.7. If fluid paths suddenly curve, as when an airway bifurcates, relatively large particles tend to continue along straight lines and may collide with a wall. It is desired to compare the rates of Inhaled particles Two mechanisms for the deposition of inhaled particles in the airways are gravitational settling and inertial impaction, depicted in Figure P3.7. If fluid paths suddenly curve, as when an airway bifurcates, relatively large particles tend to continue along straight lines and may collide with a wall. It is desired to compare the rates of gravitational settling and inertial impaction at various locations within the respiratory tract. Figure P3.7 Particle deposition at an airway bifurcation. The inertia of the particle causes its trajectory (dashed curve) to depart from the fluid path it had been following (solid curve). (a) The measure of particle inertia is stopping distance \( D_{s} \), which is how far a particle drifts when its propelling force is removed. For simplicity, suppose that a particle is being carried initially at a velocity \( u(0)=u_{0} \). in the \( \mathrm{x} \) direction, and then the fluid suddently makes a \( 90^{\circ} \) turn. Because there is no longer an \( x \) component of the fluid velocity, drag gradually reduces \( u(t) \) to zero. This can be modeled by setting \( g=0 \) in Eq. \( 3.3-16 \). Show that, for a particle with a diameter \( d \) and \( u d / v<1 \), \[ D_{s}=\frac{\rho_{0} d^{2} u_{0}}{18 \mu} \] (b) There are millions of airway segments, from the trachea to tiny alveoli deep in the lungs. According to a standard anatomical model, human airways bifurcate 23 times, ultimately generating \( 8.39 \times 10^{6} \) branches. The diameter \( (D) \), length \( (L) \) and air velocity \( (U) \) at selected locations are given in Table P3.7. An order-of-magnitude estimate of the probability of inertial impaction within a given segment is \( p_{\mathrm{i}} \sim D_{\mathrm{s}} / \mathrm{D} \). Calculate \( D_{\mathrm{s}} / \mathrm{D}^{\mathrm{D}} \) as a function of \( d \) and location. Plot this relationship. If a therapeutic aerosol needs to reach far into the lungs, explain why one with \( d=1 \mu \mathrm{m} \) or \( 10 \mu \mathrm{m} \) will be much more effective than one with \( d=100 \) \( \mu \mathrm{m} \). A typical particle density is \( \rho_{0}=1000 \mathrm{~kg} / \mathrm{m}^{3} \) and \( \mu=1.90 \times 10^{-5} \mathrm{~Pa} \) s and \( \rho=1.11 \mathrm{~kg} / \mathrm{m}^{3} \) for humid air at body temperature. Table P3.7 Characteristics of selected human airways

2. (3 pts.) Stream ecologists are interested in the number of distinct organisms found in streams, and whether differences exist based on geography. Separate random samples are obtained from sites in northeastern and southeastern streams, and the number of distinct organisms is recorded for each site. The data are given as separate boxplots for northeastern and southeastern streams. Variable Southeast Northeast 0 10 20 30 40 50 60 Which of the following statements about these data is correct? (a) The plot is skewed to the right. Fals (6) The northeastern plot is nearly symmetric. True / False (c) The median number of organisms found in northeastern streams is larger than the median for southeastern streams. True / False

Show hand hand analysis of the circuit showing algebraic expressions and numerical results for the magnitude and phase of the transfer function Vc/Vs as a function of the angular frequency of the source (or the frequency f). Calculate the corner (3 dB) frequency c (or fc) for your circuit. Calculate the magnitude and phase of the transfer function at: =0, =c, and =. In R3 w Out Vs C2+Vc IH

14. A beaker of water rests on a scale. A metal ball is then lowered into the beaker using a string tied to the ball. The ball doesn't touch the sides or bottom of the beaker, and no water spills from the beaker. A FIGURE Q13.1

6. (16 pts.) At Center Hospital there is some concern about the high turnover of nurses. A survey was done to determine how long (in months) nurses had been in their current positions. The responses of 20 nurses were in months): 23 2 5 14 25 62 27 42 12 8 7 23 29 26 28 11 20 31 8 36 2. Construct a stem and leaf plot for the data. b. Determine the quartiles Q. Q., and 0. • Does the data contain any outliens? Compute the inner fences, outer fences and identify mild and extreme cuttienif any. Draw a box plot indicating outliers, if any.

Requirement 1. Prepare the statement of owner's equity for Wayans Towing Service for the month ending June 30, 2018. Assume Wayans contributed $14,000 during June Enter any increases in capital prior to the subtotal and any decreases to capital below the subtotal. Wayans Towing Service Statement of Owner's Equity Month Ended June 30, 2018 2,950 Wayans, Capital, June 1, 2018 Wayans, Capital, June 30, 2018 i Data Table - X $ 26,850 Service Revenue $ 13,500 1,200 8,200 Equipment Office Supplies Notes Payable Rent Expense 8,000 4,000 Accounts Receivable Accounts Payable Wayans, Capital, June 1, 2018 Salaries Expense 700 2,950 Cash 2,000 2,000 Wayans, Withdrawals 1,500 Print Done Wayans Towing Service Income Statement Month Ended June 30, 2018 Revenues: Service Revenue $ 13,500 Expenses: Salaries Expense $ 2,000 700 Rent Expense Total Expenses 2,700 $ Net Income 10,800