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Milk spoils about 5x as fast at 300 K as it does at 250 K. What is the apparent activation barrier for the "milk spoiling" reaction
Briefly explain how a lake with a limestone bed is more resistant to pH changes than a lake with a granite bed
An average adult inhales a volume of 0.50 l of air with each breath. if the air is warmed from room temperature (20c) to body temperature (37c) while in the lungs.
Calculate the [H3O+] and the pH for a buffer that consists of 0.13 M HF and 0.29 M KF. (Ka of HF = 6.8x10^-4)
what is the PKa for the acid HA if a solution of 0.65 m and 0.85 M NaA has a PH 4.75
Would you expect a Diels-Alder reaction between maleic anhydride and naphthalene to require more or less harsh conditions
A 1.200 gram sample of C7H6O2 was dissolved in 11.42 grams of lauric acid, and it was determined that the freezing point of the lauric acid was lowered by 1.680 Celcius.
A chemist performed a titration experiment in order to determine the concentration of a given aqueous solution of HCl (an acid). She pipeted 20.00 mL of the HCl solution into an Erlenmeyer flask.
The Eriochrome Black T indicator is mistakenly omitted. what is the color of the analyte (standard Ca^2+ solution)? Describe the appearance of the analyte with the continued addition of the Na^2H^2Y solution? Explain?
When 1.43g of the hydrocarbon is burned, 2.39 grams of water and 4.40 grams of carbon dioxide is collected. Determine the empirical formula of the hydrocarbon. Name the hydrocarbon.
What is the molar mass of mixture A and mixture B? Show detailed work for first and best rating.
Explain the following trends in lattice energy. (Select all that apply.) (a) NaCl > RbBr > CsBr CsBr is smaller than RbBr and NaCl. NaCl is smaller than RbBr and CsBr
Draw all products of the reactions of 4-Chloro-2-methyl-pentane with NaCN and AgCN. Identify the reaction mechanisms and draw resonance
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