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- Oo.30. Subject :- Chemistry1. What is the mass of a water molecule in grams? 2. A chemist analyzed a sample of a compound that was known to contain potassium, manganese, and oxygen. She obtained the following results: The total mass of the sample = 316.08 g Mass of potassium = 78.20 g Mass of manganese = 109.88 g Determine the percentage composition of the compound 3. If at S.T.P 4.48 L of NH3(g) is allowed to react with 9.03 x 1022 molecules of O₂(g), please answer the questions for the following reaction: 4NH3(g) + 5O₂(g) 6H₂O(g) + 4NO(g) a. What is the limiting reactant? Please show all your work. b. What mass of nitrogen monoxide can be expected? c. If 3.00 g of nitrogen monoxide recovered, what would the percentage yield be? d. What reactant is in excess? Following the reaction, what is the remaining mass of the excess reactant?1. СН30 2. HСI CH;CH2CH2 `OCH3 1. CH;CH2O¯ 2. НСI CH;CHCH, OCH,CH3 CH3
- 1) The fizz produced when an Alka-Seltzer tablet is dissolved in water is due to the reaction between NaHC03 and citric acid CO2(8) + H,0(1) + Na3CgH;O;(aq) NaHCO;(aq) + H;C,H;O;(aq) a) In a certain experiment 1.00 g of NaHCO3 and 1.00 g of citric acid are allowed to react. Which is the limiting reactant? b) How many grams of sodium citrate (the last compound in the equation) form? c) How many grams of the excess reactant remain after the limiting reactant is completely consumed? d) If 0.723 g of sodium citrate was obtained in this reaction, then what is the percentage yield?c. 2 NaOH + Clb → NaCl + NACIO+ HO f P.O10 6HO4HPO. ZNa OH +Clz-> Nal+ Naclo+ Hz0 Py O10+ 6H20->4H3PC4 12. The solid fuel in the booster stage of the space shuttle is a mixture of ammonium perchlorate and aluminum powder, which react as follows(the Al2O3 coefficient to help with balancing): NH.CIO4(s)+ 10 Al(s) → 5 Al2O3(s) + N2(g) +6 HCI(g)+ H&O(g) What mass of aluminum should be mixed with 5.0 x 10 kg of ammonium perchlorate, if the reaction proceeds as stated? Aluminum metal (Al) reacts with sulfur (S) to produce aluminum sulfide (Al,S3) according to this ba O0 A ALS;(s)5:00 D 9 …. 46 31 YouTube • Now Watch ABS-CBN Entertainment live in .. Kapamilya Daily Mass: March 23, 2021 1. Titanium (Ti) is an important material in manufacturing airplane engines and frames. It is obtained from titanium tetrachloride (TiCl4), prepared from titanium dioxide, carbon, and chlorine through the following reaction: 3TIO2(5) + 4C(s) +6C2(g) à 3TIC4(9) 2CO2(9) + 2CO(g) а. If the reactor contains 11.34 g C, 13.56 g Cl2, and 8.3 g TIO2, identify the limiting reagent. b. Compute the theoretical yield of TICIĄ. After the actual experiment, the reaction produces 13.48 g TiCl4. What is the percent yield of TiCl4?
- A lecture hall contains 12 rows of seats. If the professor releases laughing gas (N2O) from the front of the room and tear gas (C6H11OBr) simultaneously from the back of the room, in which row are the students apt to start and to cry simultaneously?Approximately 12 billion kilograms of phosphoric acid (H3PO4) are produced annually for fertilizers, detergents, and agents for water treatment. Phosphoric acid can be prepared by heating the mineral fluoroapatite (Ca5(PO4)3F) with sulphuric acid in the presence of water. Ca5(PO4)3F + 5H2SO4 + 10H20 → 3H3PO4 + 5CaSO4 2H20 + HF If every kilogram of fluoroapatite yields 390 g of phosphoric acid, what is the percent yield? percentThe U.S. proven natural gas reserves in 2013 were 323 trillion ft3 . How long will these reserves last if there are no imports or exports and if the U.S. annual rate of use of 24.5 trillion ft3 continues?
- Q2: Calculate the mole fraction of 15 % (w/w) CeH1206?Silicon tetrachloride (SiC14 ) can be prepared by heating Si in chlorine gas: Si(s) + 2C12(g) -> SiClą(1) In one reaction, 0.507 mole of SICI4 is produced. What mass (grams) of molecular chlorine were used in the reaction? Choose the nearest answer. MW SICI4 = 169.9 %3D g/mol; MW CI = 35.453 g/mol16. The combustion of gasoline (octane) in a car engine can be represented by the following equation: 2C3H18(1) + 2502(g) a. What mass of oxygen is used up to burn a full tank of 36.00 kg of gasoline? Text --> 16CO2(g) +18H20(g) b. Why might a vehicle that is calibrated to run perfectly at sea level run poorly at higher elevations? Text Тext According to the Canadian Automobile Association, the average Canadian drives 20,000 km/yr. C. Assuming that distance, how many more kg of carbon dioxide are added to the atmosphere each year by a Toyota Tacoma (fuel economy of 12.8 L/100 km) than a Toyota Prius (4.52 L/100 km)? The density of gasoline is 0.719 kg/L.