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How many liters of oxygen gas at 153 degrees Celsius and 0.820atm can be produced by the decomposition of 22.4g of solid potassium chlorate(KClO3)? the other decomposition product is solid potassium chloride(kCl)
determine the theoretical yield and the percent yield of ethanol if 684 g of sucrose undergoes fermentation and 349 g of ethanol is obtained
Draw the biuret reaction (i.e. include a structure) with a peptide(s) of your choice. You may use R to denote the amino acid side chains
Calculate the work in Joules when 2.5 mols of water vaporizes at 1 atmosphere pressure and 25 degrees C. The work is done in pushing back the atmosphere.
an iron bar of mass 869 - g cools from 90 oc to 5 oc gt calculate the heat released in kilojoules by the metal.
if 3.93 g of sodium borohydride contains 2.5times 1023 h atoms how many moles of h are present in 37 cm3 of sodium
how many moles of hcl need to be added to 15.0 ml of 0.50 m naz to have a solution with a ph of 6.50? ka of hz is
Bond energy is the change in enthalpy that accompanies the dissociation of one mole of the bond in the gaseous state.
If 20.0L of neon gas exerts a pressure of 125 psi at 423 k , what is the number of moles of gas?
calculate the equilibrium pressure of N2O4(g) and NO2(g). (c) What percentage (by moles) of the original N2O4(g) is dissociated at the new equilibrium position (total pressure = 1.00 atm)?
It was determined from six replicates measurements that a candlewick contained 12.1 ppm lead and the standard deviation was 0.6ppm. assuming no systematic errors, the true means is likely to lie between what values at 95% confidence
Describe the general approaches that are used to determine the mechanism of catalysis of an enzyme. Include in the approaches how covalent modification
A solution was prepared to have a density of 1.20 g/mL and a molality of 2.24 m at 22oC. The Mm of the solute is 63.10 g/mol. (a) What is the molarity of the solution?
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