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A sample in a calorimeter absorbed 7.18 kJ as it melted. However, the liquid sample remained at the same temperature at which it melted: it never warmed after melting. What was the Qwater for this process?
The reaction previously done was just having trans-cinnamic acid reacted with Br2 forming all the isomers with the double bond being broken and Br put into place.
If the spacing between these planes corresponds to the unit cell length (d = a), calculate the radius of a(n) cesium atom.
Glycine, an amino acid used by organisms to make proteins, is represented by the following molecular model. Write its molecular formula. Determine its molar mass. Calculate the mass of 3 moles of glycine.
Calculate ?Sºf for oxalic acid and ?Sº for the combustion of one mole of oxalic acid. c) Calculate ?Gºf for oxalic acid and ?Gº for the combustion of one mole of oxalic acid.
what is the ionic equation of the following formulas nacl cacl2 alcl3 hcl koh h2c2o4 k2c2o4 ch3cooh h2o distilled h2o
Calcule the platinum electrode potential (vs. NHE), immersed in solution containing 0.50 M Br2 KBrO3 0.20 M at pH = 2.5
The convective heat transfer coefficient of the gas inside the pipe is 30 W/m2*K, as well as the coefficient on the outside of the lagging is 10 W/m2*K. The air temperature is 20C. Explain what is the heat loss per unit length of pipe in W/m? Expl..
For the chemical reactions shown below, calculate the number of electrons transferred in the redox process. 2Cr2(O7)2- (aq) + 16H+ (aq) --> 4Cr3+ (aq) +3O2 (g) + 8H2O (l)
How many water molecules are associated with a single salt molecule in a hexahydrate?
If 29.58 mL of 0.550 M NaOH is required to titrate the oxalic acid in the 0.554g sample to the equivalence point, what is the weight percent of oxalic acid in the mixture. Oxalic acid and NaOH react according to the equation H2C2O4 (aq) + 2 NaOH(a..
The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of : (1) Lead (..
What happens to these physical properties as the strength of intermolecular forces (London dispersion forces, Dipole-dipole forces, Ion-dipole forces, Hydrogen-bond forces) increases
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