Part A) The standard molar heat of formation of water vapor (steam) is -242 kJ/mol. What amount of energy, in kilojoules, is produced when 1.50*108 liters of hydrogen gas at STP are combusted with excess of oxygen. (a) 1.50x108 (b) 1.62x10-9 (c) 1.62x109 (d) 8.10x108 (e) None of those. If so, what is your answer?
Part A) The standard molar heat of formation of water vapor (steam) is -242 kJ/mol.
What amount of energy, in kilojoules, is produced when 1.50*108 liters of hydrogen gas at STP are combusted with excess of oxygen.
(a) 1.50x108 (b) 1.62x10-9 (c) 1.62x109 (d) 8.10x108
(e) None of those. If so, what is your answer?
Part B) In a reaction between nickel (II) nitrate and sodium sulfide in aqueous solution, spectator ions are:
(a) sodium & sulfide
(b) nickel & nitrate
(c) sodium & nitrate
(d) nitrate & sulfide
(e) There are no spectator ions
Part C) Carbon dioxide diffuses through a porous barrier at a rate of 0.200 mL/min. If the unknown gas diffuses through the same barrier and at the same conditions at a rate of 0.331 mL/min, what gas out of the following it may be?
(a) Ar (b) H2 (c) NO (d) CH4 (e) C2H4
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