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- Oo.5. Subject:- ChemistryThe so called hydrogen economy is based on hydrogen produced from water using solar energy. The gas may be burned as a fuel: 2H2 (g) + O2 (g) ---> 2H2O (l) A primary advanatge of hydrogen as a fuel is that it is nonpolluting. A major disadvantege is that it is a gas and therefore is harder to store than liquids or solids. Calculate the volume of hydrogen gas at 25oC and 1.00 atm required to produce an amount of energy equivalent to that produced by the combustion of a gallon of octane (C8H18). The density of cotane is 2.66 kg/gal and its standard entalpy of formation is -249.9 kj/mol.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?
- just ICE table 2. Set up an ICE table for the addition of 0.5 mL 0.2 M NAOH to the 0.1 M buffer and calculate the expected pH. How does the calculated pH compare with the measured pH from the lab? just ice for said rxn, ignore section about lab k = 4.68*10^-11 carbonate/bicarbonate bufferEffervescent tablets contain both citric acid (C6H8O7) and sodium bicarbonate (NaHCO3) and release carbon dioxide gas when dissolved in water as well as forming trisodium citrate (Na3C6H5O7) and water. A typical effervescent tablet contains 1.00 g of citric acid and 1.92 g sodium bicarbonate. (a) Assuming that carbon dioxide acts as an ideal gas, determine the work done due to the evolution of carbon dioxide by the dissolution of one effervescent tablet in water at 25.0 °C and atmospheric pressure (1 atm i.e. 101325 Pa).(References) An 18.6 mL volume of hydrochloric acid reacts completely with a solid sample of MgCO3. The reaction is 2HC1(aq)+MgCO,(s)CO2(9) + H,O(1) + MgCl, (aq) The volume of CO2 formed is 175 mL at 23°C and 731 mmHg. What is the molarity of the HCl solution? Molarity- Submit Answer Try Another Version 3 item attempts remaining pr pt
- A 750. mL sample of 0.13 M K2CO3(aq) is combined with 250. mL of 0.13 M Cu(NO3)2(aq) at a given temperature. At the same temperature: Ksp for CuCO3 = 1.4 × 10–10Ksp for KNO3 = 1.4 × 1010 Which of the following statements is true?Natural gas consists primarily of methane, CH4(g).(a) Write a balanced chemical equation for the completecombustion of methane to produce CO2(g) as the onlycarbon-containing product. (b) Write a balanced chemicalequation for the incomplete combustion of methaneto produce CO(g) as the only carbon-containing product.(c) At 25 °C and 1.0 atm pressure, what is the minimumquantity of dry air needed to combust 1.0 L of CH4(g) completelyto CO2(g)?3H2(g)+N(g)t>2NH3/g) +Heat owhat is the Keqifthe coscentration atequilibr'um are (H2] =lo01 M: [Nz]= 0.250 M and CNH3]=1.50M? PHow many gramsofnitrogen g as are needect to produce 5OLof ammonia at STP3まら
- How many liters of CO2 can be generated from fermentation process involving 200.5 g C6H12O6? The process has been done in a room with a temperature of 28°C and a pressure of 1.02 atm▼ Part F telavancin, C80 H106 Cl2N11O27P Express your answer in percent to three significant figures. ΤΙ ΑΣΦΑ %0 24.6 Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining ? %What volume (in mL) of 3.20 M HNO3(aq) needs to be added to excess Na,CO3(s) to generate 4.85 L CO2(g) at standard temperature and pressure (STP)? Provide your answer in decimal notation rounded to the appropriate number of significant figures.