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#1 For which reactions I) O2(g)+H2(g)→H2O2(l) II) C(s, diamond) + O2(g) → CO2(g) III) N2(l) + 3 F2(g) → 2 NF3(l) IV) C(s, graphite) + 3/2 O2(g) + H2(g) → ? CO2(g) + H2O(g) V) 2 Fe(s) + 3/2 O2(g) → Fe2O3(s) would ?Hr? = ?Hf?? #2Use these three reactions CH4(g) + 2 O2(g) -→ CO2(g) + 2 H2O(g) ?H? = -802 kJ CH4(g) + CO2(g) -→ 2 CO(g) + 2 H2(g) ?H? = 247 kJ CH4(g) + H2O(g) -→ CO(g) + 3 H2(g) ?H? = 206 kJ to determine the appropriate enthalpy of change of CH4(g)+3/2 O2(g)-→CO(g)+2H2O(g). #3 Remember to calculate to the correct number of sig figs. Given the following thermodynamic data, 2H2O(g) → O2(g) + 2H2(g) ?Hrxn = 483.6kJ H2O(g) → H2O(l) ?Hrxn = -44.0kJ What is the molar heat of formation for liquid water, H2O (l)? Answer in units of kJ/mole.
a 27.00 g sample of an unknown hydrocarbon was burned in excess oxygen to form 88 g of co2 and 27 g of h2o. what is a
nitroglycerin contains 60 as many carbon atoms as hydrogenatoms three times as many oxygen atoms as nitrogen atoms and
Calculate the molarity of a solution made by adding 23.9 mL of concentrated potassium hydroxide (34.5 % by mass, density 1.46 g/mL) to some water in a volumetric flask
Calculate the percent yield. Mass of crucible after cleaning: 13.4422g.
A solution is 0.40 mol % (C6H6) in carbon tetrachloride (CCl4) at 20 degree celcius. the vapor pressure of pure benzene at this temperature is 74.61 mmHg and the vapor pressure of pure carbon tetrachloride is 91.32 mmHg
suppose a snack bar is burned in a calorimeter and heats 2000 g water by 20 degc. how much heat energy was released?
calculate the ph during the titration of 100.00 ml of 0.200 m hno3 with 0.400 m koh after 0 25.00 50.00 and 75.00 ml of
aswer the questions1. use a spreadsheet to make an xy scatter plot label the axes and give it a title.2. use a
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3-nitrophthalic acid will be first converted into 3 nitrophthalhydrazide by reacting with 25% hydrazine. Reduction of the nitro group to an amino group with sodium hydrosulfite affords luminol.
What range of accelerating voltages would be required to cover the mass range between 16 and 625, for singly charged ions, if the field strength is held constant?
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