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A nugget of pure gold of 4.90 grams absorbed heat of 270 Joules. determine the final temperature of the Au if the initial temperature = 22.0°C? specific heat of Au =0.129 J/(g·°C).
What is the percentage of (R)-phenylalanine present in this mixture? d. What is the percentage of (S)-phenylalanine present in this mixture?
What is the molarity of a solution prepared by dissolving 13.1 g of glucose (of MW 180 amu) in 217 mL of solution?
Gallium-68 decays by positron emission, with a half-life of 68.3 min. How much 68Ga remains from a 10.0 mg sample after 683 min
Give two reasons why anhydrous conditions must be maintained during a Grignard synthesis. Write chemical reactions to explain
Using a proton NMR how could you experimentally determine that you have a trans isomer rather than a cis isomer of Chalcone
For the reaction 2HCl+Na2CO3 →2NaCl+H2O+CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP?
Trans-bis(ethylene) dithiocyanato copper (II) cobalt forms three linkage isomers. write each structural formulas and name each isomer
what amount of heat is produced? The specific heat of aluminum is 0.90J/g C?
What is the molarity of acetic acid, CH3COOH (MM= 60.0) in vinegar if a 5.00mL sample of vinegar requires 22.50mL of a 0.195M NaOH solution to neutralize it?
The Ka value for boric acid is 5.8* 10^{-10}. What is the pH of an aqueous eye wash solution that is 1.3% boric acid by mass? Assume the density of the solution is the same as that of water.
How many total moles of oxygen gas can be generated through this decomposition? B. If this oxygen is formed within the bottle described in question 1, what change in pressure would be predicted?
or each of the following cases, briefly explain whether the action causes net reaction from left to right, right to left, or no net reaction. Also, state whether the equilibrium partial pressure of NH3 increases, decreases or stays the same. (a) i..
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