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2.55g napthalene dissolved in 30g of benzene. benzene freezes at 5.5C and resulting solution freezes at 2.13C what is the freezing point depression constant of benzene.
In a first order decomposition in which the rate constant is 0.201 sec-1, how long will it take (in seconds) until 0.131 mol/L of the compound is left, if there was 0.566 mol/L at the start
calculate the gasphase proton affinity of NH3. The lattice energy of NH4Cl may be estimated from Kapustinskii's formula using rN-Cl = 3.50 Å.
Calculated molarity of HClO: .50/.4541=.174 2) calculated molarity of NaClO: (5.86g/74.45 g/mol)/(.4541L=1.10) 3) Set up ICE chart and calculated H+(x). x=(3E-8)(1.10)/(.174) = 1.90E-7 4) took negative log of 1.90E-7 to get a pH of 6.72.
calculate What mass of AlBr 3 is formed and calculate what mass of CCl 4 will be formed if 1.5 moles of CH 4 react with 1.4 moles of Cl?'
A 0.682 g sample of an unknown weak monoprotic organic acid, HA was dissolved in sufficient water to make 50 milliliters of solution and was titrated with a 0.135 molar NaOH solution.
What is the empirical formula of a substance that contains 0.183 mol of carbon, 0.367 mol of hydrogen, and 0.183 mol of oxygen
Wriite an equation for a substitution reaction between 2-bromopropane and potassium iodide. In this case, do not include the state
What is the hydronium-ion concentration in a 0.025 M solution of carbonic acid, H2CO3? For carbonic acid,
What is the mole fraction of ethanol, CH3CH2OH, in an aqueous solution that is 20.0% ethanol by mass?
Suppose we start with 0.0530 mol of N2O5 in a volume of 5.2 L. How many minutes will it take for the quantity of N2O5 to drop to 0.0253 mol?
Discuss the breakdown of glycogen. List all the enzymes and their roles. In addition, explain the regulation of the reaction of glycogen breakdown.
Osteo imperfecta displays a wide range of symptoms for mild to servere. On the bases of amino acid and collagen structure,
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