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How do you estimate energy change using bond reactions in a complete methane combustion
If 60.0g of Cu metal at 85C were added to 60.0g ethanol at 10C in a calorimeter of heat capacity 30.0 J/K what would the final temperature be assuming no heat losses? cp for Cu= 0.380 J/K/g and Cp for ethanol = 60.0 J/K/mol
What are the equilibrium concentrations of each reactant and product? (All three substances are gases at 250 °C)
Water and 8 mol/L potassium nitrate solution are mixed to produce 700mL of a solution with a concentration of 6.mol/L. What volumes of water and potasium nitrate are used.
Which of the following compounds can exhibit geometric isomerism (has cis-trans isomers)?
Find concentration of each ion present in the solution formed by mixing: 44.0 mL of 0.150M Na2SO4 and 25.0 mL of 0.200M KCl.
At 212 mm Hg and 24 °C, a sample of gas occupies a volume of 125 mL. The volume is increased to 325 mL and the temperature is reduced to -5.0 °C. What is the final pressure of the gas in the flask?
Why is it particularly important to wash the cupric hydroxide intermediate in the synthesis of cupric acetate (verdigris)? Be specific about what is being removed and why it matters.
Cadaverine are 9.13 and 10.25. If the ends of these molecules look the same, why do they have different pkas?
Consider the reaction 2NO2(g)--> N2O4(g). Go = -5.40 kJ at 298K. (b) Calculate delta G at 298K if partialpressures of NO2 and N2O4 are 0.36 atm and 1.60 atm
The absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun and other stars. What is the wavelength of light (in nm) that is absorbed by He+ ions
Titration of an oxalate sample gave the following percentages of percent oxalate: 12.28%, 12.54%, and 12.24%. Calculate the average and the standard deviation.
A sample of a gas weighs 2.880 g and has a volume of 1010.0 ml at 685.0 torr and 29.0 C. What is its molar mass
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