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The normal boiling point of ether is 307.8 K. Calculate the temperature at which its vapor pressure is exactly half of that at its normal boiling point. The heat of vaporization for ether is 26.69 kJ/mol.
E85 fuel is a mixture of ethanol and gasoline. What mass in kilograms of E85 (d=0.758g/mL) can be contained in a 14.0 L gallon tank.
Find the intrinsic conductivity for germanium. (Assuming ni = 2.5x 1019/m3 at room temperature.)
Calculate the Mn of the polyisobutene if A 7.5g polymer sample found to discolor 3.4 mL of a 0.05 M solution of Br in CCl4 ?
calculate how much CaCN2 is required to form 12.6 moles of ammonia? Given that the percent yield is 65.8%?
an auto mechanic spills 85 mL of 2.6 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 2.5 M NaHCO3 must be poured on te spill to react completely with the sulfuric acid.
A buffer that contains 0.55 M base, B, and 0.30 M of its conjugate acid, BH+, has a pH of 8.94. What is the pH after 0.0020 mol HCl is added to 0.25 L of this solution.
you add 1.65L of water to 112g of sodium acetate. what is the molarity of the sodium acetate in the solution
Methane and hydrogen sulfide form when 36g H2 reacts wih carbon disulfide, calculate the percent yield if the actual yield of CH4 is 69.8g.
Find the concentration and pH solution - What is the pH of a solution of 0.65 M acid and 0.51 M of its conjugate base if the pKa = 5.30?
Explain what health risks may arise people use this hot water in the preparation and cooking and what is the equilibrium constant for this reaction
What mass of natural gas (CH4) must burn to emit 470. kJ of heat? CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g).
We have a 100mL 0.2M AgNO3 solution and a 100mL 0.2M CH3COONa solution. Please describe how to prepare a 35 mL mixture solution containing 60mM AgNO3 and 140mM CH3COONa?
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