* Write The Number Of These Perfixe Giga 2-Pico 3- Milli -1 إجابتك Give The Systematic Name 1-ZNSO4 2-Te-2 * 3- HCI (g) 4-PF5 5-LIOH إجابتك Express 5,515,000 in Scientific Natation 1- With 1 Signifigant Figure(SFs) 2-With 2 SFs * 3- With 3 SFs 4-With 4 SFs إجابتك The Speed of sound in air at room temperature is about 434 m/s.calculate this speed in (mph)
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- student found a bottle of unknown origin in the basement of an "CAUTION—contains С₁H₁O.” No other A old house. The bottle was labelled information was given, but inside the bottle were some white crystals. The student took the bottle to a chemistry laboratory, where she analyzed the crystals with the help of the laboratory staff. C₁2H₁6O reacted with Br₂ in CCl4 adding one mole of Br, and forming C₁₂H₁OB2₂. When a sample of C₁₂H₂O was reacted with O3 followed by Zn/H₂O, two different samples, J and K, were obtained. Compound J had a molecular formula of C.HgO₂, and its NMR is shown below. Compound K had a molecular formula of C₂H₂O, and it could be oxidized to compound L, with a molecular formula of C₂H₂O₂. The IR spectrum of L showed a very wide, strong band centred around 3000 cm*¹. The NMR spectrum of L showed only two different absorptions: a doublet (6H) at 0.9 ppm and a septet (1H) at 3.6 ppm. There was also a singlet (1H) off the scale at 11.8 ppm. students, deduce possible…O 2 0:0£ لم يتم الاجابة عليه بعد الدرجة من 2 علم هذا السؤال Which one of the following compounds has ?been named CORRECTLY اختر أحد الخيارات a. Cds cadmium(11) sulfide b. All the names are wrong с. Crog chromium(VI) oxide d. GaF3 gallium trifluoride e. TiO2 titanium dioxide 10 ig لم يتم الاجابة عليه بعد الدرجة من 2 علم هذا السؤال porates at room is described as الوقت المتبقی 5 0:05:5 اخترأحد الخيارات >▼ Part B 2NO3(aq) +8H(aq) + 6e 3Fe(s) + 2NO3 (aq) +8H+ (aq) 3Fe(s)→→3Fe²+ (aq) + 6e →>> 2NO(g) + 4H₂0 (1) →3Fe²+ (aq) + 2NO(g) + 4H₂O(1) IVE ΑΣΦ Calculate El using the tabulated standard electrode potentials at 25 °C. cell Express your answer in volts to three significant figures. Eeell= 1.21 SWE Submit Previous Answers Request Answer 2+ X Incorrect; Try Again; 4 attempts remaining ? V stontiol buoubtrooting the electro na
- The representations 14N or 15N give more information than simply the chemical symbolN. Explain?KOH(aq) + HBrO4 (aq) - 2CH₂CH₂CO₂H (1) + 70₂(g) KBrO₂ (aq) + H₂O(1) 6CO₂ (g) + 6H₂O(g) Mg(ClO3)₂ (s) → MgCl₂ (s) + 30₂(g) 2 Na₂S (aq) + FeCl₂ (aq) → 2NaCl(aq) + Fes (s) combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination O decomposition combination single replacement double replacement upply/ O decomposition O O precipitation single replacement O combustion double replacement acid-base precipitation combustion acid-base O precipitation combustion nacid-base precipitation combustion acid-base 8 目 000 18 ArWhat is Donnan's theory? What is its importance in biophysical chemistry?
- O 1 11:1A > Write a complete explanation for the following picture. *** II >is used for the qualitative analysis of elements nitrogen, sulphur and halogen in Organic compounds. In order to detect them, it is 55. necessary to convert them into ionizable inorganic substances. O Sodium Fusion Test Aliphatic Test O Ignition TestHW 2.5 Blackb X MindTap - Cengage Learnin X C 5-3) In the laboratory a stuc x 5735112480241329813180832311&elSBN=9781305862883&id=1774598910&snapshotld=33... ✩ Is this reaction endothermic or exothermic? Use the References to acc s important values if needed for this question. When H₂(g) reacts with Cl₂(g) to form HCI(g) according to the following equation, energy is released into the surroundings. H₂(g) + Cl₂(g) →→→2HCI(g) Submit Answer References What is the sign of AH for the reaction? Would the energy of the surroundings increase or decrease as a result of this process? Bb My Blackboard Content - alpy and Representing Energy Change: This is group attempt 1 of 10 MacBook Air Autosaved at 8:59 PM Q Searc Regenerate G
- You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in the sample containing Fe. Hemoglobin contains 3.83% by mass of a compound called heme (C₃₄H₃₂FeN₄O₄, MW = 616.49 g/mol). You find that your 11.5 mg blood sample contains 27.1 micrograms of Fe. What is the mass percent of hemoglobin in your protein sample?Select the single best answer. Consider the steps in coal gasification: C(coal) + H₂O(g) → CO(g) + H2(g) CO(g) + H₂O(g) → CO2(g) + H2(g) CO(g) + 3H2(g) → CH4(g) + H2O(g) AH'rxn = 129.7 kJ AH°rxn = -41 kJ AH'rxn=-206 kJ Identify the overall reaction for the production of methane, CH4.Write the Lewis structures and give the electron-region geometry, molecular geometry, and bond angles, and the hybridization of the central atom of these polyatomic ions and molecules. (a) BrF2+ (b) OCCl2 (c) CH3+ (d) SeCS (e) CH3