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How can you visually demonstrate that a substance is insoluble or just slightly soluble? Some solid remains in both cases.
a student titrates 0.738 grams of an unknown solid, weak acid with 0.1027 Molarity NaOH. What is the molecular weight of the unknown solid, weak acid?
Photochemical chlorination of heptane gave a mixture of monochlorides containing 15% 1-chloroheptane. What other monochlorides are present? Estimate the percentage of each of these additioanl C7H15Cl isomers in a monochloride fraction.
A solution contains .60 M NH4OH and 1.5 M NH4Cl. what is the maximum concentration of Mg2+ that can be present in such a solution without precipitating Mg(OH)2
After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37 C. Calculate the heat capacity of the calorimeter (J/C - joules per degree).
Calculate the molar solubility of AgI in 3.6 M NH3. The overall formation constant for Ag(NH3)2+ is 1.7 x 10^7.
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 23.75 mL of 0.0502 M NaOH but overshoot the end point
The pH of a bicarbonate-carbonic acid buffer is 8.50. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
If we have benzene, acetyl chloride, AlCl3 and HCl in a solution of NaoH and CH2Cl2 which of these will be in the NaOH layer and Which of them will be in the CH2Cl2 layer
Calculate the standard molar enthalpy of formation ?H°f of N2H4(g) from the following information: N2(g) + 2H2(g) ? N2H4(l) ?H°rxn = +50.6 kJ N2H4(g) ? N2H4(l) ?H°rxn = -44.8 kJ A. +5.8 kJ/mol B. +95.4 kJ/mol C. +47.7 kJ/mol D. -95.4 kJ/mol E. -5...
A beaker containing 250 mL of a 0.500 M solution of acetic acid COOH) is added to 125 mL of a 0.850 M solution of sodium carbonate. The reaction that ensues produces carbon dioxide, sodium acetate COONa), and water. How many grams of carbon dioxid..
Calculate the molality of a solution containing 292g glucose(C6H12O6) dissolved in 1.91L of water.
When 0.234 g of the hydrate Cr2(SO4)3•xH2O is heated, 0.128 grams of anhydrous Cr2(SO4)3 remains. What is the value of x in the formula for the hydrate
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