### How much heat (kj) is needed

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Ethanol (C2H5OH) melts at -114 °C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively. How much heat (kJ) is needed to convert 25.0 g of ethanol at -155 °C to vapor phase at 78 °C?

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 Linear algebra system of equations : Determine q such that the system-Has no solution Inhomogeneous linear system of differential equation : Find the solution to the given system that satisfies the initial condition Which is the higher density of polyethylene : Polyethylene Density, (a) Which is the higher density of polyethylene, linear or branched? Select the choice with the best accompanying explanation. Certificate maturity value : Freddy purchased a certificate of deposit for \$20,000 on January 1, 2010. The certificate's maturity value in two years (December 31, 2011) is \$22,050, yielding 5% before-tax interest. How much heat (kj) is needed : Ethanol (C2H5OH) melts at -114 °C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-K and 2.3 J/g-K, respectively. Create the 5-step hypothesis test for particular claim : Develop the 5-Step Hypothesis Test for a particular claim related to your work or life environment. (This should be a test of one-sample mean or one-sample proportion. Computing rate and activation energy of diffusion : Calculating Rate and Activation Energy of Diffusion, a) How do I calculate the time that will it take for 0.001 moles of CO2 to leak from a container at steady-state, assuming that the amount of CO in the surroundings is insignificant? What is the br- concentration : When 9 mL of a solution containing 2.5 M AlBr3 is diluted to 30 mL, a dilute solution is formed. What is the Br- concentration in 15 mL of the dilute solution? Find the total revenue at break even point : With a selling price of 40 dollars each, how many pool cues must be sold to break even? What would the total revenue be at this break even point?

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