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If a reaction has Ea=+40.0 kJ/mol and is run at room temperature (298 K). At what temperature will the rate be twice the rate at room temperature?
a 10.00g sample of toothpaste contaning stannous fluoride gives0.145g precipitate of stannous phosphate.what is the percentage of snf2 in the toothpast sample.
why are there variations in the weight of acid consumed for the same brand of antacid?
The radius of a gold atom is 144 pm. How many gold atoms would have to be laid side by side to span a distance of 2.63 mm?
a colored substance z has an absorption maximum at 350 nm. a solution containing 2 mg of z per liter had an absorbance
What is the percentage ionization of the acid? What is the value of Ka for the acid? 2) Periodic acid, HIO4, is an important oxidizing agent and a moderately strong acid. In a 0.20 M solution
Show that the proton condition for a NH4Cl solution is a linear combination of the mass balance equations and the charge balance equation.
Enough of a monoprotic acid is dissolved in water to produce a 0.0155 M solution. The pH of the resulting solution is 2.43
how much must you perspire to maintain a constant body temperature assuming no other energy changes and all the calorie content of the soda is released as heat?
calculate the wavelength of light emitted when each of the following transitions occur in the hydrogen atom. what type
Analysis of the products revealed two methylated sugars: 2,3,6-tri-O-methyl-D-glucose, 2,4-di-O-methyl-D-glucose and 2,3,4,6-tetra-O-methyl-D-glucose. The ratio of these sugars was 20:1:1. determine the structure of the polysaccharide?
This leaves the aspartic acid amine group and the side chain carboxylic acid functional group of aspartic acid. Find the values for these two groups of as partic acid and calculate a predicted pI value for aspartame
which of the compounds of H2C204, Ca(OH)2, KOH, and HI behave as acids when they are dissolved in water
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