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A 7.45 g sample of solid LiOH is completely dissolved in 120.00 g of water at 23.25°C contained in a calorimeter with a heat capacity of 11.7 J/°C. The specific heat capacity of the solution produced was 4.20 J/g•°C, and final temperature reached was 34.91°C. How much heat was produced by the dissolution
If the concentration of an acid in solution is 2.2 times larger than the concentration of its conjugate base, and the pH of the solution is 3.5, what is the pKa of the acid?
A 100 mL of a 0.100 M solution of vinegar (acetic acid, CH3COOH) is mixed with 100 mL of a 0.100 M baking soda (sodium bicarbonate) solution and a reaction proceeds that generates carbon dioxide, water and sodium acetate.
Determine the enthalpy for the partial combustion of methane to carbon monoxide.
A .464 g sample of a metal, M, reacts completely with sulfuric acid according to M+H2SO4 yields MSO4+H2. A Volume of 211 mL of H is collected over water, the water level in the collecting vessel is the same as the outside level.
How many mL of 0.358M NaOH are required to completely react with 16.9 mL of 0.577M copper(II) nitrate. (balanced equation)
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 535 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
which two metals are plated, and what is the total potential? c) If 3.00 g of metal is plated in the voltaic cell, how much metal is plated in the electrolytic cell?
A 5.61g sample of NaCl is added to 112mL of pure water (density of pure water @ 25 degree celcius is 0.9982g/mL). What is the mass % of the NaCl solution
an auto mechanic spills 85 mL of 2.6 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 2.5 M NaHCO3 must be poured on te spill to react completely with the sulfuric acid.
The specific rotation, [?]D, for (-)-malic acid is -27. What is the observed rotation for a solution of 0.75 g of (-)-malic acid in 10 mL of water in a sample tube having a pathlength of 10 cm
The volume of a sample of hydrogen is 798mL and it exerts 621mmHg pressure at 5.00C. what volume does it occupy at standard temperature and pressure.
Find the capacity factor for solutes with each of the following partition coefficients, K. (Note: capacity factor is also called retention factor, capacity ratio, or partition ratio.)
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