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The following information is given for silver at 1atm: boiling point = 2212oC Hvap(2212oC) = 254 kJ/mol melting point = 961oC Hfus(961oC) = 12.0 kJ/mol specific heat solid= 0.238 J/goC specific heat liquid = 0.285 J/goC What is H in kJ for the process of freezing a 28.9 g sample of liquid silver at its normal melting point of 961 oC.
What is the wavelength of a photon of electromagnetic radiation having a photon energy of 4.56X10^-19 J? Report your answer in nanometers, to the correct number of significant figures.
A gas-filled balloon having a volume of 2.50 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth)
Explain why cis dichloroethene has a boiling point of 60 degrees C while trans - dichloroethen has a boiling point of 48 degrees C.
The first-order decomposition of SO2Cl2 to sulfur dioxide gas and chlorine gas at 320°C has a half-life of 8.75 hr. If one begins with 600. mmHg of pure SO2Cl2 in a 5.00-L flask at 320°C
Suppose you add 4.25 g of naphthalene, C10H8, to 67.9 g of benzene, C6H6, and they form an ideal solution. The vapor pressure of pure benzene is 0.1252 atm at the temperature of the experiment.
Consider the reaction 2 Al2O3(s) ! 4 Al(s) + 3 O2(g) . H = +3339.6 kJ/mol What is H for the formation of one mole of Al2O3(s) from the elements.
what is the molar concentration of the salt solution formed in this reaction? 3. what is the molar concentration of the excess reactant once this reaction has finished?
Acid chlorides are used as electrophiles in the Friedel-Crafts reaction to prepare aromatic ketones. The reaction involves the transfer of an aromatic hydrocarbon with an acyl chloride in the presence of a lewis acid
An aqueous solution is 36.0 % by mass potassium bromide, KBr, and has a density of 1.33 g/mL. determine the mole fraction of potassium bromide in the solution?
what will the final mixture contain if 14.0 g of N2 and 35.5 g of Cl2 react to completion and the balanced equation is: N2+3Cl2--->2NCl3
if you burn 1.5 mol C3H8 according to the following reaction C3H8 +5O2 = 3CO2 + 4H2O how many grams of carbon dioxide are produced.
For the unbalanced equation _Al+_O2=_Al2O3. How many moles are needed to form 2.3 moles of aluminum oxide.
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