Compound 47 is a high-boiling liquid (boiling point 204-205 'C), that reacts with Ag* ion in aqueous ammonia to form a "silver mirror" (the Tollens test). The Mass, IR, and 'H NMR spectra, along with 13C NMR data, are given below. Elemental Analysis: C, 79.97; H, 6.71; O, 13.32.

Suggest structures given the 1H NMR spectra and formulas for each of the compounds below. C4H10O

A piece of magnesium metal was reacted with each of the following acids: 3 M HCl, 3 M acetic acid (Ka=1.8 • 10-5) and 3 M HF (Ka=6.8•10-4). Rank this acids in decreasing order of reactivity. Explain as well.

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I am not sure how they calculated the ln 5. I would like to possibly see a more detailed step for this solution.

* OWLV2 | Assignment Course: CHM_103 FF OWLV2 | Online 1 X A ECC - WebMail E Sign In in Connect ps//east.cengagenow.com/ilm/takeAssignment/takeCovalentActivity.do?locator=assignment-take Use the References to access important values if needed for this question. 8A 1A H 2A 3A 4A SA 6A 7A He BCNO F Ne M38 18 28 Al Si P S CI Ar 68 7B Ge As Se At Rn The element nitrogen would be expected to form covalent bond(s) in order to obey the octet rule. Use the octet rule to predict the formula of the compound that would form between nitrogen and bromine , if the molecule contains only one nitrogen atom and only single bonds are formed. Formula: pt pt Submit Answer Try Another Version 10 item attempts remaining Previous Next 9:25 PM o search D 4) 12/14/2020 Prn Scr SysRq F5 F6 F8 F9 F10 F11 F12 Pause Delete Num Break Backspace 4. 5 7 8 9. Y U D F G H J K L Enter C V B N M < Shift

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3. A solution is prepared by mixing 1.00 mmol of a weak acid (HA, pka =6.44) with an unknown amount of KOH. The solution is diluted to 1.00 L using deionized water. An aliquot of the solution is placed in a 1.00-cm cuvet. The absorbance of the solution at 285 nm is 0.7748. Using the measured absorbance value, calculate the concentrations of HA and A in the solution. Then calculate the pH of the solution. You may assume all activity coefficients are equal to unity. НА A- Molar absorptivity at 285 nm (M1 cm) 456 2050