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Determine the percent yield of barium sulfate obtained (4.9852g) when 100.0 mL of a 0.2516M aqueous barium chloride is treated with an excess of sulfuric acid? Hydrochloric acid is a by-product.
When a magnetic sector instrument was operated with an accelerating voltage of 2500 V, a magnetic field of 0.4 Tesla was required to focus on the CH4+ on the detector.
The rate constant for a particular second-order reaction is 0.47 M-1 s-1. If the initial concentration of reactant is 0.25 mol/L, it takes _____ s for the concentration to decrease to 0.13 mol/L.
The heat capacity of Hydrgon may be represented by Cp= (1.554 + 0.0022 T) J/K mol. Compute the entropy changes for the system surroundings and the universe for the (a) reversible heating, as well as (b) irreversible heating of 1.0 mole of hydrogen..
A separate experiment is conducted in which 4.82 x 10-5 M CaI2(aq) is added to a solid solution of PbI2 at 20 oC. Qualify how the molar solubility changes
Question- Iron(iii) reacts with SCN to form a red complex ion with the formula (FESCN)2+. The net ionic equation describing this reaction is given in as fe3+(aq, light yellow) + SCN (aq, colorless)= (FESCN)2+ (aq, red).
Suggest to her a visual functional test that she can use to detect the presence of an alkene. Explain why it is specific for alkenes in this situation.
When an aqueous solution that is 1M each in HCl, ZnCl2, and CoBr2 is electrolyzed, the elemental products formed initially at the cathode and anode are, respectively
If i add amnonia to 1 mL of copper (II) sulfate solution, and i am observing the mixture turn a darker blue what type of chemical reaction is taking place.
Acid halides react with atmospheric water to produce the corresponding- A. Amine B. amine salt C. amide D. carboxylic acid E. acid chloride
What weight of A would be removed from a solution of 21 g of A in 50 mL of water by a single extraction
The inital concentration of HBr in a reaction vessel is 1.2 x 10 ^-3 mol/L. If the vessel is heated to 500 K, WHat is the percent decomposition of HBr and the equilbirum compositions of the mixtures?
The molecular weight of A was found to be 72.06 g mol^-1. Ketones B and C were found to have identical elemental analyses, which were C, 69.72
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