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Sucrose and sucrose treated with acid produce somewhat different results in Benedicts test. Explain Why
What occurs at the molecular level of an extraction? We did an extraction of benzoic acid using NaOH and diethyl ether dried to 1, 4-dimethoxybenzoate using NaOh
What volume of H2 (at 25oC and 1.00 atm ) can be produced by reaction of 161 g Fe and 202 g of HCl? (Atomic weights: Fe = 55.85, Cl = 35.45, H = 1.008).
Explain why viruses, in physiologic conditions, are capable of packing extremely large amounts of DNA (negatively charged) into their tiny capsids.
Explain why the absolute value of the work done by a process can never be greater than the absolute value of the Helmholtz free energy change.
what is the percent by mass of nahco3 in a solution containing 30 g of nahco3 dissolved in 500 ml of
The effective nuclear charge is approximated as the total nuclear charge minus the number of core electrons. Thus, effectively, core electrons decrease the nuclear charge felt by the valence electrons because they are between the nucleus and the v..
compute the density in gcm3 of piece metal that has a mass of 0.400kg and a volume of 73cm3. how to work this problem
A first order reaction has a rate constant of 0.342 sec-^1 at 29.5 degrees C. If the activation energy is 69 kJ, calculate the temperature in degrees C at which the rate constant is 0.428 sec^-1.
Assign an oxidation state to each atom in each polyatomic ion. Express answers as a signed integer. 1. CrO4^2- 2. Cr2O7^2- 3. PO4^3- 4. MnO4^-
An alloy is made of Copper (Cu) and tin (Sn). The density of the alloy is found to be 8.76g/cm3. The reported densities of copper and tin are as follows: Cu = 8.96g/cm3 Sn = 7.30g/cm3. Find the % of copper and zinc in the alloy.
alloy sample was analyzed for its copper content iodometrically. The alloy was dissolved in hot, concentrated nitric acid and prepared for analysis
At what point in a Grignard Reaction is it no longer water sensitive? explain why the reaction can be exposed to water after this point
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