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- %TE l. a 9:-1 Write The Molecular Fotmula For The Following 1-Copper Sulfate 2-Phospours Pentabromide 3-Calicum Chloride dihydrate *4-Sodium Oxide إجابتك A- Balance The Equation NO2(g) + H2O(1) -- HNO3(1) + NO(g) B- What is formula mass of K2Cr2O7 (O=16g/mol , Cr=52g/mol and K=39g/mol) C- Calculate the empirical formula of a C6H12O6 that following present composition by mass: C=23.75%, H=37.5% and O=40% percent. (C=12g/mol, * H=1g/mol and O=16g/mol) إجابتك What is mean the Base according to -1 Arrhenius and the Acid acoording to Bronsted ? 2- What the solvent of 100ml N2 and 25ml 02 ? Why? 3-What is Oxidation Number of ions in these compouds a- * KMN04 b-MGH2 c-H2O2 d-N2 e-CIO3 -1 إجابتكH.W Q1: Calculate the number of mililitersof H,SO, its (d= 1.835 g/cm and it contains (93.2%) to prepare (500 ml) of (3N) from acid. Q2: Prepare (100 ml) of (5M) sodiumhydroxide NaOH; the atomic weight is Na=23,0%=16, H=1. ngiroen gduced by the followl "OF a the I. C,H;O;N(s) + 3H,(g) + HCI(aq) → CH;ONCI(s) + 2H,0(1) cess, II. CH,ONCI(s) + NaOH(aq) CH,ON(s) + H,O() + NaCI(aq) III. CH,ON(s) + C,H,O;(1) C3H,O,N(s) + HC,H,O2(1) The first two reactions have percent yields of 87% and 98% by mass, respectively. The overall reaction yields 3 moles of acetaminophen product for every 4 moles of CH5O3N reacted. a. What is the percent yield by mass for the overall process? b. What is the percent yield by mass of Step III? D6 kg each tep is 173. An element X forms both a dichloride (XC12) and a tetrachloride (XCL4). Treatment of 10.00 g XCl, with excess chlorine forms 12.55 g XCI4. Calculate the atomic mass of X, and identify X. 174. When M2S3(s) is heated in air, it is converted to MO2(s). A 4.000-g sample of M,S3(s) shows a decrease in mass of 0.277 g when it is heated in air. What is the average atomic mass of M? 175. When aluminum metal is heated with an element from Group 6A of the periodic table, an ionic compound…
- J= M = i 0: = 1. NaBH4 2. dilute H* N 1. K 2. L 1.03 2. S(CH3)2 K= H3CO H3CO. M N = P = 1. NaNH2 2. Br CI L= O P 1. CN- 2. Na (s), NH3 (1), coldThe due is at 11 pleaseBaCO3 - Ba2+ + CO3? reaction was given. It is known that the carbonate anion is hydrolyzed in [HCO ][OH] [co? ] CO3- + H20 = HCO; + OH Kb1 and [H2CO3][OH¯] [HCO3] HCO; + H2O = H;CO3 - OH- Kb2 = form. Since Ka1 = 1.44x10-7, Ką2 = 4.7x10-11 and KspBaco3 = 5.1x10-9, calculate the solubility of BaCO; salt at pH = 8 and 12 depending on the pH value.
- A common ingrsdient in homemade Lundry detergents (s Wa stung soda you were asked to do an ana of a sample ol this Ingredient You found the sample contains 4.20% Cand 7.05% H. What is the formul washing soda it this Ingredient is a tlydrate of sodium carbenate? Select one Ob Na; COpx10H;0 Oc NaCO,22H,0 O d. Na, CO u6Hy0 O e No, CO4H,04 nm 10. Give the empirical formula for vitamin C (ascorbic acid), C,H;O6In the preparation of Alum, we used (3 mole) reacted with (25 ml) of (1 M) KOH solution and the resulting mass of Alum was (8.5 gm). Caleulate the percent (%) of Alum yield? (M.wt: K=39, Al-27, S-32, H=1).
- 2:34 PM Tue Apr 26 A universityofmanitoba.desire2learn.com Question 5 0/ 1 p Consider the combustion of cyclopentane, C5H10: C5H10(1) + 15/2 O2(g) → 5 CO2(g) + 5 H20(1) A„H° = –3292 kJ mol-! %3D What mass of carbon dioxide, in units of grams, is formed for every 1000.0 kJ of heat released at constant pressure from the complete combustion of cyclopentane? Answer: 0.00136 x (66.84) g 1/1 Question 6 Calculate A,H°, in units of kJ mol, for the following reaction: Mn203(s) + 3 CO(g) → 2 Mn(s) + 3 CO2(g)sited ).pdf 0₂ Sample Undo Redo Clear Help A Common Greek(upper) Greek(lower) Arrows Other X X₁ Ox X Aa (s) (1) (g) (aq) 0 [Review Topics] [References] Use the References to access important values if needed for this question. A 21.71 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 21.23 grams of CO₂ and 4.346 grams of H₂O are produced. In a separate experiment, the molar mass is found to be 90.04 g/mol. Determine the empirical formula and the molecular formula of the organic compound. (Enter the elements in the order C, H, O.) Empirical formula: ped LIU-BK-Faculty-Jea....pdf ^ H Furnace M 28 H₂O absorber CO₂ absorber pts remaining Previous NUH) Save and Exit Show all Act Me Win 10/7/2022 X 64°F SunnyBb Chem101 (Homework & Class As X Chem101 + A app.101edu.co Question 4 of 10 Submit Consider the balanced chemical reaction below. How many grams of CaSO4 can be produced from 1.00 kg of Cas(PO:)2 and 1.00 kg of H:SO:? Сaа:(РО:)(s) + 3 H.SO:(aq) — 3 CASO:(s) + 2 H:РО-(аq) 1 2 NEXT > Based on your knowledge of stoichiometry, set up the table below to determine the amounts of each reactant and product after the reaction goes to completion. Ca:(PO:):(s) 3 H:SO:(aq) 3 CaSO:(s) + 2 H.PO:(aq) Before (mol) Change (mol) After (mol) 5 RESET 1.0 -1.0 3.22 x 10 -3.22 x 108 9.67 x 10 -9.67 x 103 10.2 -10.2 3.22 -3.22 6.45 -6.45 9.67 -9.67 5.2 x 104 -5.2 x 104 0.52 -0.52 12:33 PM P Type here to search Hi a 11/4/2020