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Multiple Choice 0.2 points Consider the following standard reduction potentials: O$_2$(g) + 4H$^+$ (aq) + 4e$^-$ → 2H$_2$O (l) +1.23 V Ni$^{2+}$(aq) + 2e$^-$ → Ni(s) -0.28 V Fe$^{2+}$(aq) + 2e$^-$ → Fe(s) -0.45 V Zn$^{2+}$(aq) + 2e$^-$ → Zn(s) -0.77 V Which process will occur to act as a sacrificial anode for iron? Ni (s) to Ni$^{2+}$ (aq) 2 H$_2$O (l) to O$_2$ (g) Ni$^{2+}$ (aq) to Ni (s) Zn (s) to Zn$^{2+}$ (aq) Zn$^{2+}$ (aq) to Zn (s) O$_2$ (g) to 2 H$_2$O (l)

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1. i. Based on the VSEPR model, indicate the molecular geometry of the following ion and the bond angle approximately! (4 points) N : ii. What is the formal charge on each atom for the ion below? Write two more resonance forms of the same ion with the formal charge on each atom and indicate which resonance form is more stable (give the reason). (8 points) : =C iii. By the overlap of which two hybrid orbitals is formed the carbon-carbon single bond in the following molecule? (4 points) $H_2C=CH-C \equiv N$ iv. Which is the stronger acid? Give an explanation. (5 points) $H_2O$ or $H_2S$ v. To which side does the following equilibrium lie? Show the acid, the base, the conjugate acid, and the conjugate base in the equilibrium below. Choose the strongest base. Give an explanation. (8 points) $HCN + CH_3CO_2Na \rightleftharpoons NaCN + CH_3CO_2H$ $pKa (HCN) = 9.31$ $pKa (CH_3CO_2H) = 4.76$ vi. In the following compounds, identify the one with the smallest boiling point value: (4 points) 2-methylpropane, pentane, 2-methylbutane

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Given the following reaction at equilibrium conditions, predict what the reaction will do when the following changes are made. PCl$_3$(g) + Cl$_2$(g) $\rightleftharpoons$ PCl$_5$(g) a) Some Cl$_2$(g) is added b) The volume of the container is increased a) Reaction goes left; b) reaction goes left a) Reaction goes right; b) reaction goes right a) Reaction goes right; b) reaction goes left a) Reaction goes left; b) reaction goes right None of the other answers is correct

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1. [0/1 Points] DETAILS MY NOTES OSCOLPHYS2 3.4.WA.041. PREVIOUS ANSWERS ASK YOUR TEACHER PRACTICE ANOTHER While standing on the roof of a building, a child tosses a tennis ball with an initial speed of 14 m/s at an angle of 25° below the horizontal. The ball lands on the ground 2.7 s later. How tall, in meters, is the building? x What is the final vertical position of the ball? What variable are you asked to find? With the given information, what constant acceleration relation will allow you to solve for it? m Additional Materials eBook Submit Answer

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Use sigma notation to write the sum.\\ $\left[5\left(\frac{1}{3}\right) + 6\right] + \left[5\left(\frac{2}{3}\right) + 6\right] + \dots + \left[5\left(\frac{13}{3}\right) + 6\right]$ \\ $\sum_{j=1}^{n} \left[5\left(\frac{i}{3}\right) + 6\right]$

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2. Which of the following is/are true about economics? I. It involves economic agents. II. Studies how choices are made in the face of scarcity. III. It is concerned with limited wants amid unlimited resources. IV. It is concerned with unlimited wants amid limited resources.

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Question 6) Find a 95% confidence interval for the slope in each of the following settings: (a) $n = 30$, $\hat{y} = 11.8 + 15.5x$, $SE_{b_1} = 7.72$ (b) $n = 30$, $\hat{y} = 1.8 + 5.5x$, $SE_{b_1} = 7.72$ (c) $n = 120$, $\hat{y} = 11.8 + 15.5x$, $SE_{b_1} = 7.72$ Question 7) For each of the settings in the previous exercise, test the null hypothesis that the slope is zero versus the two-sided alternative.

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Texts: 5.1 Please show all work and formulas. A B D E F CHAPTER 17: FINANCIAL CONDITION ANALYSIS Calculate the following ratios based upon data from The Heart Hospital financial statements. For each ratio, provide the formula and show all work. PROFITABILITY RATIOS ROE (return on equity) Peer Group Statement of Income and Retained Earnings Year Ended December 31, 2020 (in thousands) Revenue 67,053 Expenses Personnel expense 22,849 Medical supplies and drugs 14,052 Other operating expenses 9,670 Interest expense 1,303 Depreciation Total operating expenses Total Margin 15.0% Indicator Analysis: Net income Non-operating income Net income before taxes Total assets ROA (return on assets) Indicator Analysis: LIQUIDITY RATIOS Cash and equivalents Debt Ratio Prepaid expenses and other current assets Total current assets Accounts payable Accrued compensation and benefits Other accrued liabilities Current portion of long-term debt Total current liabilities Long-term debt Total liabilities Owners' equity Total liabilities & equity Debt to Equity Ratio Current Ratio Days Cash on Hand Times Interest Earned ASSET MANAGEMENT RATIOS Days in Patient AR Average Age of Plant Total Asset Turnover Indicator Analysis:

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14) The thin, uniformly charged rod shown in Figure has a linear charge density $ \lambda $ Find an expression for the electric potential at P. $ (\mathrm{L}=1 \mathrm{~m} ; a=1 \mathrm{~cm} ; b=1.2 \mathrm{~m} $; $ \left.\lambda=0.25 \times 10^{-0} \mathrm{C} / \mathrm{m} ; \mathrm{k}=9 \times 10^{4} \mathrm{Nm}^{2} / \mathrm{C}^{2}\right) $ Use: $ \int \frac{1}{\sqrt{r^{2}}+a^{2}} d x-\mathrm{b}\left|x+\sqrt{\omega^{2} \pm a^{2}}\right| $ A) $ 14,7 \mathrm{~V} $ B) $ 11.3 \mathrm{~V} $ C) $ 7.9 \mathrm{~V} $ D) $ 5.3 \mathrm{~V} $ E) $ 1.7 \mathrm{~V} $

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Legal fishing area Protected area Market 1 Market 2 Market 3

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