I NEED 100% SOLUTIONS PLEASE!! Calculate the work for the expansion of CO2 from
ID: 841442 • Letter: I
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I NEED 100% SOLUTIONS PLEASE!!
Calculate the work for the expansion of CO2 from 1.0 to 4.7 liters against a pressure of 1.0 atm at constant temperature. 3.7 L middot atm 4.7 L middot atm 0 L middot atm -3.7 L middot atm -4.7 L middot atm A sample of nirtragen gas (N2) weighs 6.83 g. How many moles of the gas are present? mol N2 At STP, how many liters of the gas are present? L N2 If the sample of N2 was combined with 1.00 mol of He gas in an 1.00 L container at 298 K, what is the total pressure in atmospheres? Atm For the following reaction conditions, indicate whether the listed values are positive (+) OR negative (-). Given the following data: 2O3(g?) rightarrow 3O2(g) Delta H = -427 kJ O2(g) rightarrow Delta H = +495 kJ NO(g) + O3(g) rightarrow NO2(g) + O2(g) Delta H = -199 kJ Delta for NO = + 90 kJ/mol Delta for NO2 = + 34 kJ/mol Delta for NO = + 249 kJ/mol Using both Hess's Law and standard enthalpies of formation, calculate Delta H for the reaction: NO(g) + O(g) rightarrow NO2(g) Hess's Law (show ALL work, including the rearranged equations): Standard Enthalpies of Formation:Explanation / Answer
Answer to 13)
work = P (delta v) = 1 x (4.7 - 1) = 3.7 L atm.
To convert L atm to joules you multiply by 101.3
W = 3.7 L atm x 101.3 = 374.81 joules
Answer to 17)
Number of moles of gas present = 6.83/14(molecular mass) = 0.487 moles
At STP , The standard temperature is 273 K (0
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