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13) Why is ethyne a stronger acid than ethane? A) Because a 2p electron is closer to the nucleus than a 2s electron and an $sp^2$ hybridized carbon is thus more electronegative than an $sp^3$ hybridized one. B) Because a 2p electron is closer to the nucleus than a 2s electron and an $sp^2$ hybridized carbon is thus less electronegative than an $sp^3$ hybridized one. C) Because a 2s electron is closer to the nucleus than a 2p electron and an $sp^2$ hybridized carbon is thus more electronegative than an $sp^3$ hybridized one. D) Because a 2s electron is closer to the nucleus than a 2p electron and an $sp^2$ hybridized carbon is thus less electronegative than an $sp^3$ hybridized one.

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Macmillan Learning Individuals who herd and care for livestock as a way of life used to be called pastoralists. cattle drivers. cowboys. ranchers.

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1. [0/1 Points] DETAILS MY NOTES PREVIOUS ANSWERS The figure below shows an overhead view of a horizontal bar that is rotated about the pivot point by two horizontal forces, $\vec{F}_1$ and $\vec{F}_2$, with $\vec{F}_2$ at angle $\phi$ to the bar. Rank the following values of $\phi$ according to the magnitude of the angular acceleration of the bar, greatest first: (a) 90°, (b) 70°, (c) 110° (use only the symbols > or =, for example, a=b>c). b>c=a

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How much higher was average customer satisfaction before 10am compared to 12pm through to 1pm included? 12.7 Contact Centre Metrics 13.5 14 99 84-04 81 918987 17.3 Next AgA -Call levels %Abandon rate -Customer satisfaction

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Is it true that $P(A \mid B \cup C) = P(A \mid B) + P(A \mid C)$? If yes, prove it; if no, provide a concrete counterexample.

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John's bank account balance in dollars, b, is a function of the number of days t since the beginning of 2017. Let's call this function f. a. Which of the following are true? Select all that apply. $f \cdot t = b$ $f(x) = y$ $f(b) = t$ $f(t) = b$ b. Assume that t is also a function of b, and the name of this function is g. Use function notation to write g as a relationship between t and b. (Your answer will look similar to your answer in part a.) Preview c. Although g is a reasonable name for the function from part b., what name is more common? $f'$ $g^{-1}$ $f^{-1}$ $f^{-1}$

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问题 31 When demand is unit elastic, a change in price causes total revenue to stay the same because total revenue never changes with price changes. The percentage change in quantity demanded exactly offsets the percentage change in price. Buyers are buying the same quantity. The change in profit is offset by the change in production cost.

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Q3: Which of the following statements is correct or not Element Mn: is a transition element K:is an alkaline earth metal and is soft Al: is a semimetal in group IIIA Br: is a halogen and gas I: is liquid and is halogen Correct Not correct Si: is solid and is metalloid Ca:is alkali metal and group IIA Ar :is Nobel gas and is liquid Q4: Identify each the following as molecular or ionic compound Compound Na$_2$S$_2$O$_3$ S$_2$Cl$_2$ NO$_2$ CaCl$_2$.2H$_2$O Cl$_2$O$_7$ Au$_2$S$_3$ Hg$_2$Br$_2$ Ionic Molecular Q5: Which of the following is correct or not NaNO$_3$ KCrO$_4$ Mg$_2$(PO$_4$)$_3$ Al$_2$S$_3$: LiCr$_2$O$_7$ CaHPO$_4$: Correct Not correct Q6: Write the formula for the following a) Sodium bromide: b) Copper (II) sulfite: c) Lead(IV) chloride: d) Calcium oxalate: e) Silicon tetrafluoride: f) Potassium thiosulfate: g) Manganese (11) iodide. hepta hydrate 2

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A room 8.0m wide has a span roof which slopes at 33° on one side and 40° on the other as shown below. Find the length of the roof slope AB. Hint: Use Sine Law.

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claudia p.