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Nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation N2(g) + 3H2(g) = 2NH3(g). Delta H(rxn)=-56 kJ. The delta H(rxn) was determined using Hess's Law and the following three related reactions:
2NH3(g) + 4H2O(l) = 2NO2(g) + 7H2(g) delta H=-68kJ2NO2(g) = N2(g) + 2O2 (g) delta H= ?
H2O(l) = H2(g) + (1/2)O2(g) delta H = -21kJ
What is the mass percent of a sodium fluoride solution prepared by dissolving 0.64 moles of sodium fluoride into 63.5 grams of water?
When you use the half reaction method to balance the redox reaction between one mole of NBS and ascorbic acid to give L-dehydroascorbic acid and succinimide, how many moles of electrons are transferred.
Which of the following is/are network covalent compounds A. sodium chloride B. diamond C. quartz (silicon dioxide) D. both B & C
Draw the mechanism that illustrates the conversion of 2-chloro-2-methylbutane to 2-methyl-2-butanol with water (H2O) as the nucleophile.
a 460 ml sample of oxygen o2 was collected by displacement of water at 24 ? c under a total barometric pressure of 1095
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Calculate the entropy change. What would be the value of S if the heating were carried out irreversibly?
An aqueous solution is 35 % by mass methylamine (CH3NH2) and has a density of 0.85 g/cm3. What is the pH of the resulting solution if 50 mL of this solution is diluted
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Each of the following solutions is separated from a solution containing pure water with a semipermeable membrane. Assuming they all have the same temperature, rank the solutions from the highest to the lowest osmotic pressure
Sulfur dioxide reacts with chlorine at 227 oC: SO2(g) +Cl2(g) ↔ SO2Cl2(g) Kp for this reaction is 5.1 x 10-2 atm-1. Initially, 1.00 g each of SO2 and Cl2 are placed in a 1.00 L reaction vessel.
The titration involves the formation of a stable, neutral complex: Hg2+ (aq) + 2 SCN- (aq) = Hg(SCN)2 (aq) A)How many mmoles of mercury are in the sample
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