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Solution A is twice as concentrated as solution B but has a smaller absorbance value. Both solutions abosrb maximally at wavelength =585 nm. Give a through explanation for this observation.
what quantity of heat is required to heat 168 g of copper from -12.2 to + 25.6 degrees C?
A 52.0 mL volume of 0.35 M CH3COOH (Ka=1.8e-5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 21.0 mL of NaOH.
A solution is made by dissolving 0.745g potassium chloride in 100.0g water. The solution is observed to freeze at -0.3580C. What is the van't Hoff constant for potassium chloride
A mixture of 0.150 moles of C is reacted with 0.117 moles of O2 in a sealed, 10 L vessel at 500 K, producing a mixture of CO and CO2
aluminum oxide decomposes to produce aluminum metal and oxygen gas. when 9.8g of aluminum oxide decomposes how many
The Milikan experiment is important because it determined the of an . Using Thomson's and Milikan's the of an was determined. Rutherford's experiment is important because it clearly demonstrated that the is mostly
An aqueous solution containing 5.38g of an optically pure compound was diluted to 200.0 ml with water placed in a polarimeter tube 20.0cm long. The measured rotation was -3.43degrees at 25 C. Calculate the specific rotation of the compound.
determine the net change of oxidation number of each of the elements in the redox equations.
compute the molar mass of vitamin c if a solution of 22.7 g in 100. g of water freezes at -2.40 oc. the kf of water is
Determined to be first order with respect to N2O5
when a sample of aqueous hydrochloric acid was neutralized with aqueous sodium hydroxide in a calorimeter the
After a 5% HCl extraction of an ether solution, that initially contains dissolved carboxylic acid and amide, what component(s) would be found in the aqueous layer
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