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What mass of Li2S is needed to prepare 300. mL of a solution having a litium ion concentration of 0.050 M?
Write the structure for each functional group. Give an example of a molecule with a functional group and name appropriately.
Consider two analgesics derived from salicylic acid: acetylsalicylic acid (aspirin) and methyl salicylate (oil of wintergreen, found in muscle relaxants like "BenGay").
Use the Ksp values in the table 16.2 to calculate the molar solubility of the following compound in pure water. Before Addition ~0.00mol 0.100mol 0.100mol
A total of 2.00 of a compound is allowed to react in a foam coffee cup that contains 130 of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 . What is the enthalpy of this reaction. Assume that no heat is lost to t..
You have a 10.40 g mixture of table sugar (C12H22O11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be -2.24°C. Calculate the percent by mass of sugar in the mixture.
Calculate the missing value in each problem. a. delta G=?; delta H=-217 kJ/mol; delta S=151 J/mol*K; T=451 K b. delta G= -20.4 kJ/mol; delta H= 107 kJ/mol; delta S= 211 J/mol*K; T
Consider a titration of 24.2 mL of 0.0878M solution of aqueous ammonia [Kb(NH3) = 1.8e-5] with a 0.115M of hydrochloric acid.
Calculate the volume of the NaOH solution needed to completely neutralize the acid in the flask. Calculate the pH for a, the initial acid solution in the flask
Formula Molar Mass (g/mol) ?G°f (kJ/mol) ?H°f (kJ/mol) S° (J/(K mol)) I2(g) 253.812 19.33 62.44 260.69 I2(s) 253.812 0 0 116.14 T = (NA) K R = 8.314 J/(K mol) Calculate the temperature (K) at which the equation as written is at equilibrium.
Determine the concentration of the HCL solution from the data for the standardization of the HCl with the Na2CO3 Na2CO3 had 0.0826 grams in 25ml of water Initial volume of HCl
a gas has a volume of 25 ml when its pressure .056 atm what will the volume of the gas be at the pressure of 1.00 ?
Note that the absolute stereochemical configurations of chiral substances cannot be determined from the data. Arbitrarily draw a configuration for an enantiomer (and be consistent with the derivatives); omit wedge/dash bonds for a racemate.
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