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When a 13.0-g sample of NaOH(s) dissolves in 400.0 mL water in a coffee cup calorimeter, the temperature of the water changes from 22.6 degrees C to 30.7 degrees C. Assuming that the specific heat capacity of the solution is the same as for water, calculate the heat transfer from system to surroundings, in kilojoules
Based on the Henderson-Hassalbach equation how many mmols of Tris-HCl are there in a 100 mL of a 100 mM Tris-HCl buffer solution at pH 8.1? Note that the 100 mM refers to the sum of Tris and Tris-HCl concentrations. Answer in mmols
What products would you expect from reaction of 1-bromopropane with the reagent NAI? I believe this is a SN2 reaction
An ideal gas flows through a horizontal tube at steady state. no heat is added and no shaft work is done.the cross sectional area of the tube changes with length and this causes the velocity to change
a solution is prepared by adding 40.3 g of Mg(NO3)2 to 127 g of water. Calculate the mole fraction and molality of magnesium nitrate in this solution
The bottom of a box has a surface area of 25.0 cm2. The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea level is 9.80 m/s2. What pressure is exerted by the box where it rests?
What are 3 most significant structural differences between HPLC equipment and Ion Chromatography instruments
Briefly describe the process of recycling. Do you recycle? If yes, what types of items do you recycle? If not, why not?
Hydroiodic acid reduces chlorine to hydrochloric acid and iodine. Enter a balanced net ionic equation for the reaction.
Calculating concentration of an ion, Given the concentration of hydroxide ions, use the ion product constant of water to calculate the concentration of the other ion at 298 K
In an experiment, 1.26 grams of iron combines with oxygen to give a compound that has a mass of 1.80 grams. What is the empirical formula of the compound?
calculate the standard enthalpy change for this reaction using standard enthalpies of formation. general chemistry 10th edition ebbing and gammon
Discuss the behavior of tungsten trioxide (or molybdenum trioxide) and product(s)
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