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Which of the following statements is true? (Multiple answers possible) Answer A. At the equivalence point the amount of reagent added is equal to the amount of analyte present. B. The endpoint does not correspond to the equivalence point. C. The endpoint corresponds to the equivalence point. D. At the equivalence point the amount of reagent added does not yet equal to the amount of analyte present. E. There is no error associated with the difference in equivalence and end points. F. The equivalence point cannot be determined by a color change of an indicator. G. At the end point a change in a physical quantity associated with the equivalence occurs.
how many total moles of gas are produced? B. If each mole of gas occupies 59 L under the conditions of the explosion, how many liters of gas are produced? C. Express your answer using two significant figures. How many grams OF N2are produced in th..
1) What is the filtration rate expected for this system? 2)How significant is the medium resistance?
Is 2-methyl-2-propanamine (C4H11N) a primary amine, secondary amine, tertiary amine, or quaternary ammonium salt? 2) Is N-methyl-2-propanamine a primary amine
what is the central atom in nitrogen trifluoride, carbon tetrabromide, phosphorus pentiodide, sulfur hexachloride, and bromine trifluoride
what is the concentration of chromium ion present in a 0.07092 M solution of potassium hydroxide in contact with a large excess of a precipitate
Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 49.0 mL of 0.0800 M H2SO4 (forming Na2SO4 and water).
How do you who that both ZnS and CuS will precipitate at pH8. 2) Show that only CuS will precipitate when (H3O+) = 0.3M
The pH of blood is 7.35. It is maintained in part by the buffer system composed of carbonic acid (H2CO3) and the bicarbonate (hydrogen carbonate, HCO3-) ion. What is the ratio of [bicarbonate]/[carbonic acid] at this pH
The Ksp of AgCrO4 is 1.9 x 10^-12. Calculate the molar solubility (in mol/L) of Ag2CrO4 in 0.1 M AgNO3.
The same mass of solute is dissolved in 9.82 g of t-butanol instead of cyclohexane. What is the fexpected freezing point change of the solution
A 0.366-g sample of an unknown reducing agent required 30.0 mL of 0.100 N (normality) KMnO4 for titration. What is the equivalent weight of the reducing agent?
How much heat (in {rm kJ}) is evolved in converting 1.00 mol of steam at 140.0 C to ice at -55.C? The heat capacity of steam is 2.01J/g* C and of ice is 2.09 j/g* C.
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