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List and discuss two potential sources of error in this experiment accuracy and precision.
Question- A 1.50 g sample of solid NH4NO3 was added to 35.0 mL of water in a styrofoam cup (insulated from the environment) and stirred until it dissolved. The temperature of the solution dropped from 22.7 C to 19.4 C. What is the heat of reaction..
calculate the concentrations of all species in a .890 m sodium sulfite solution. the ionization constants for sulfurous acid are ka1= 1.4x10^-2 and ka2=6.3x10^-8
Explain why do you see distinct lines when metal salts are burned however see a continuous spectrum when observing sunlight or light from an overhead projector
Calculate the approximate molarity of this solution from the volume, percent composition, and density.
how many grams of lithium hydroxide are required to completely react 10.8 moles of selenous acid. write the
A beaker has a mass of 85.6 g when empty and 110 g when it contains 38.7 mL of pentane. What is the density of pentane
What is the smallest number of packages of buns, packages of patties, and jars of pickles, respectively? Express your answer as three integers separated by commas.
a typical deposit of cholesterol c27h46o in an artery has a mass of 3.90 mg. how many molecules of cholesterol are
a solution is prepared by dissolving 15.0g of nh3 in 250g of water. the density of resulting solution is 0.974gml.
List all of the intermolecular forces
We then lower the temperature to 20 degrees Celsius. Explain what happens. Define the process in terms of intermolecular forces as well as the kinetic energy properties of the molecules.
What pH condition (either more soluble in acidic solution OR pH = 1 or more soluble in basic solution of pH= 13) would improve the following compounds solubility in water:
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