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A hydrochloric acid solution is standardized using 0.500g of sodium carbonate, Na2CO3. Find the molarity of the acid if 29.50mL are required to reach a phenolphthalein endpoint.2 HCI(aq) + NaCO3(s) -right arrow 2 NaCl(aq) + H2O(I) + CO2 (g)
A 10.0 mL sample of household ammonia solution required 18.15 mL of 0.320 M HCI to reach neutralization. Calculate(a) the molar concentration of the ammonia and (b) the mass/mass % concentration of ammonia (17.04g/mol). given a solution density of 0.990 g/mLHCI (aq) + NH3(aq) -right arrow NH4Cl(aq)
what is the pH of 1.0 L of a buffer that is .11M HNO2 and .150M NaNO2. what is the pH of the buffer after adding 1.0 mL of 12M HCl. pH of original buffer
Based on the formulas of the following solutes, which compound would have the largest van't Hoff factor (i)
If the pressure exerted by ozone,O3 , in the stratosphere is 3x10^-3 and the temperature is 246 K, how many ozone molecules are in a liter?
Calculate the percent yield for an experiment in which 5.50 g of SOCl2 was obtained in a reaction of 5.80 g of SO2 with excess PCl5
a tank contains a mixture of 3.0 mol of nitrogen 2.0 mol of oxygen and 1 mol of carbon dioxide at 25 degrees and a
Calculate the molar density at this pressure at 310. What fraction of the gas phase molecules initially present for 1.0 in the chamber are present at
How is the characteristic of line spectrum determined in an element? Does each element produces a particular color?
When (R)-6-chloro-2,6-dimethyloctane undergoes solvolysis in 80% aqueous acetone, what is the relationship between the substitution products formed in the reaction
Which os the dollowing statements is correct concerning the equivalence point in a titration of a weak acid (HA) by a strong base? The pH is less than 7 because HA is a weak acid
determine the empirical formula of a 4.58g sample that contains 2 g of phosphorus with the balance of the mass being
Assume that the following terpenoid is derived biosynthetically from isopentenyl diphosphate and dimethylallyl diphosphate, each of which was isotopically labeled at the diphosphate-bearing carbon atom (C1). Click on the carbons that would be isot..
The temperature of a reaction was increased from 20 to 40deg.C. You were determining the rate of reaction at each of the 2 temperatures. The second reaction should be faster by how much
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