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1.During a titration the following data were collected: A 10 mL portion of an unknown acid solution was titrated with 1.0 M NaOH. 40 mL of the base were required to neutralize the sample. What is the molarity of the acid solution?
2.How many grams of Cl2 can be prepared from the reaction of 15.0 g of MnO2 and 30.0 g of HCl according to the following chemical equation?
3.What is the oxidizing agent in the following chemical reaction?
5H2O2 + 2MnO4- + 6H+ 2Mn2+ + 8H2O + 5O2
A buffer is made by dissolving 11.2 g of sodium dihydrogen phosphate, NaH2PO4, and 17.7 g of disodium hydrogen phosphate, Na2HPO4, in a liter of solution. What is the pH of the buffer?
Calculate the percent enantiomeric excess of the contents of the bottle labeled as just menthol. For the purchased sample what percentage of (-)-menthol is indicated by this measurement?
One of the first steps in the enrichment of uranium for use in nuclear power plants involves a displacement reaction between and aqueous HF.
based on ion charges and relative ion sizes, rank these ionic compounds by their expected melting points SrO CsBr SrF2 RbF
If Kp = 1.80 for this reaction, what is the total pressure inside the vessel at equilibrium?
What are the major products of 1methylcyclopentene reacts with BR2 and CCl4 can someone illustrate it with drawings is better if i can see it
what is the percent yield of a reaction in which 228. g phosphorus trichloride reacts with excess water to form 118 g
A copper refinery produces a copper ingot weighing 150 Ib. if the copper is drawn into wire whose diameter is 7.50 mm, how many feet of copper can be obtained from the ingot
Bombardment of nitrogen-14 with an alpha particle produces a proton and what other radioactive isotope
The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity.
In a plot of [S]iVs/Vi versus [1.031]x+s,fVf/Vi, the slope and y-intercept were 1.031 mV/mM and 0.06 mV, respectively. Calculate the concentration of the cocaine metabolite in the sample (2 s.f.) in mM.
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.700 it M solution of ammonia, NH_3, to prepare a buffer solution that has a pH of 8.62? K_b for ammonia is 1.8 * 10^{-5}.
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