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In a calorimeter, 10.0 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed?
Explain why the CO ligand donates the lone pair on carbon in bonding to metals rather than the pair
Titrations: Finding Mass Percent of Arsenic in a Pesticide, The arsenic in a 1.0211-g sample of a pesticide was converted to H3AsO4 by suitable treatment. The acid was then neutralized and exactly 40.00 mL of 0.05922M
What would be the effect on the results of mistakenly adding 2.43 x 10^-3g Mg to 4.0mL of 0.1M HCl, rather than to 4.0mL of 1.0M HCl as instructed
Calculate standerd enthalpy of formation for dimand given that C graphite + oxygen(g) -------CO2(g) H = -393,5kj/m dimond(C) + O2(g)------CO2 (g) H = -395.1kj/m
Describe two types of regulation of the enzyme glutamine synthetase and explain why the regulation
positrons cannot penetrate matter more than a few atomic diameters but positron emission of radiotracers can be
sulfuric acid (H2SO4) by mass has a density of 1.221 g/mL. Determine the molarity of the solution.
what is the mole fraction of ethanol in an aqueous solution that is 46 percent ethanol by mass?
Magnesium hydroxide is only very slightly soluble in water. The reaction by which it goes into solution is: Mg(OH)_2 (s) Mg^2+ (aq) +2 OH- (aq)
why we call benzene phenyl and not benzyle when one hydrogen is removed because in case of alkanes we name them alkyl on the removal of one hydrogen atom.
You make 10-4 M solutions of NaOH and NaHCO3 and a 10-4.3 M solution of Na2CO3. You use pure distilled water that has been fully degassed.
A bicycle tire is filled with air to a pressure of 100. psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius.
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