Which of the following diatomic species is expected to be the most stable towards dissociation? Copyright statement: B2 Be₂ [B₂] [B₂] [Be₂] dibute. This question is part of a timed assessment that is to be completed individually and without any assistance.
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![Which of the following diatomic species is expected to be the most stable towards dissociation?
Copyright Statement:
B2
Be₂
[B₂]
[B₂]
[Be₂]
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- [Review Topics] [References] This question has multiple parts. Work all the parts to get the most points. a Estimate the value of AH° for the following reaction from bond enthalpies using the data below. H2 (9) + F2 (9) 2HF(g) Bond Enthalpies (in kJ/mol) Single Bonds F H 436 567 159 ΔΗ' kJ Submit Retry Entire Group 9 more group attempts remaining Submit Answer W 人国 DEC 3 étv MacBook Air DII DD 000The dipole moment (u) of HBr (a polar covalent molecule) is 0.824D (debye), and its percent ionic character is 12.2 %. Estimate the bond length of the H-Br bond in picometers. Note that . 1 D 3.34 x 10-30 Cm and in a bond with 100% ionic character, Q=1.6 x 10-19 C. Express your answer to two significant figures and include the appropriate units. View Available Hint(s) r = μA Value 6 O Units ? Inits input for part BCompare and contrast covalent vs. ionic bond. Use complete sentences and as many details you can think of. Use ONE example of each. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 10pt A v Ix II
- Group the electronic configurations of neutral elements in sets according to those you would expect to show similar chemical properties. Note that as long as the configurations are grouped correctly with regard to each other, it does not matter which set you assign to each group. Set A Set B Answer Bank 1s2s? 1s°2s²2p°3s²3p°4s² Is²25²2p°3s°3p² 1s? 1s²25²2p 655²4d105p°6s²4f\45dl®6p² about us careers privacy policy terms of use contact us helpThe Lewis structure for the chlorate ion is Calculate the formal charge on the chlorine (C1) atom. Express your answer as an integer. ► View Available Hint(s) formal charge on Cl = Submit Previous Answers Incorrect; Try Again; 3 attempts remaining Part B Calculate the formal charge on each of the oxygen (O) atoms labeled a, b, and c in the following Lewis structure. b :O: Express your answers as integers separated by commas. ► View Available Hint(s) b :0: formal charge on Oa, Ob, Oc c =Q. 7a) Arrange the following species in order of increasing size from left to right (i.e. from smallest to largest) & explain: K*, Se2-, As³+, Br Q. 7b) Arrange the following species in order of increasing electronegativity from left to right (i.e. from least to most electronegative) & explain: P, Sb, Se, Cl, Ge Q. 7c) Arrange the following species in order of increasing first ionization energy from left to right (i.e. from lowest to highest) & explain: N, Mg, Si, K, Se Q. 7d) Arrange the following species in order of increasing electron affinity from left to right (i.e. from least negative to most negative) & explain: Mg, Sc, Si, Li, Ga
- Consider these compounds: A. Ag2SO4 B. BaSO3 C. Co(OH)2 D. ZnCO3 Complete the following statements by entering the letter(s) corresponding to the correct compound(s). (If more than one compound fits the description, include all the relevant compounds by writing your answer as a string of characters without punctuation, e.g, ABC.) Without doing any calculations it is possible to determine that zinc cyanide is more soluble than and zinc cyanide is less soluble than. It is not possible to determine whether zinc cyanide is more or less soluble than Submit Answer Retry Entire Group 9 more group attempts remaining by simply comparing Ksp values.AH (kJ/mole) -306.4 species PC13 (g) PCls (g) P (g) Cl (g) 1. -398.9 +314.5 +121.4 Calculate the P-Cl bond energy in PCI3 and in PCI..16522631&OpenVellumHMAC=250253b32e9565151f3a112a4880967e#10001 I Review Constants Periodic Table ving reactions. Part A | 1. CH3O 2. HCI CH;CH2CH2 OCH3 Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default. CONT. 12D H | +) X) EXP H. C N.
- Part B The dipole moment (u) of HBr (a polar covalent molecule) is 0.844D (debye), and its percent ionic character is 12.5 % . Estimate the bond length of the H Br bond in picometers. Note that • 1D= 3.34 x 10-30 C .m and • in a bond with 100% ionic character, Q = 1.6 x 10-19 C. Express your answer to two significant figures and include the appropriate units. HA ? r= 5.3 • 1018 pm1- The following chemical reaction takes place in an aqueous solution: FeBr2 (aq) + 2KOH (aq) → Fe(OH)2 (s) + 2KBr (aq) Write the net ionic equation for this reaction. 2- Draw the Lewis structure for ethane (C2H6). Be certain you include any lone pairs. 3-Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced. HBr + Ca(OH)2 → 4-A chemistry student needs 25.0 g of methyl acetate for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of methyl acetate is 0.934 g *cm-3. Calculate the volume of methyl acetate the student should pour out. Be sure your answer has the correct number of significant digits. ____________mL 5- NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a microwave signal to the Space Shuttle using radio…ow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References] Use the References to access important values if needed for this question. In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to Thermometer measure the energy of a solution phase reaction. A stúdent heats 63.82 grams of silver to 99.27 °C and then drops it into a cup containing 83.16 grams of water at 24.20 °C. She measures the final temperature to be 27.20 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.57 J/°C. Water Assuming that no heat is lost to the surroundings calculate the specific heat of silver. Metal sample Specific Heat (Ag) = 1/g°C. Submit Answer Try Another Version 2 item attempts remaining Previous Next Save and Exi nt Cengage Learning | Cengage Technical Support