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The standard enthalpy of reaction, DH°rxn for C2H2(g) + 2 H2(g) ® C2H6(g) is -311.5 kJ mol-1. Determine the value of DE°rxn for this reaction. Q 2 options: 1) -306.5 kJ mol-1 2) -309.0 kJ mol-1 3) -314.0 kJ mol-1 4) -316.46 kJ mol-1 5) +4646 kJ mol-1
when ch4 methane of two grams are burned in a bomb calorimeter the temperature rises from twenty four degree
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
Calculate the partial pressure of carbon dioxide in the associated soil atmosphere.
What is the OH- in a solution that has a pH of 4.92? Give your answer to 3 significant figures using E-notation (i.e., 1 number before and 2 after the decimal point)
Calculate the number of moles of HCl that would be consumed by 1.0 g of NaHCO3
the pressure on a 625 ml sample of gas is changed from .925 atm to 1.45 atm. what is the new sample of gas?
Determine the boiling point of a solution of 22.5 g of fructose, C6H12O6 , in 294 g of phenol.
an automobile gasoine tanks holds 42 kg of gasoline. when the gasoline burns 147 kg of oxygen are consumed and carbon
When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose that you are planning a backpacking trip and will need to boil 40 of water for your group
Consider the reversible reaction: 2NO2(g) N2O4(g). If the concentrations of both NO2 and N2O4 are 0.016 mol L-1, what is the value of Qc
the density of octane is .703 g/mL the efficiency of burning both is identical will anyone actually save money using ethanol (cost around $0.83 per liter) compared to gas at $1.10 per liter
Anfinsen studied the folding properties of the enzyme ribonuclease using the denaturants 2-mercaptoethanol and urea. How does each of these materials contribute to the unfolding of the protein,
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