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Instructions: Record your observations in Table 1 and answer the post lab questions. Be clear and concise in your answers. Rename the file as instructed and submit to the assignment drop box.
Name:
Table 1
Substance
Observations
Dry, solid table salt (NaCl)
Dry, solid table sugar (glucose, C6H12O6)
NaCl solution
C6H12O6 solution
Deionized or distilled water
Tap water
Muriatic acid (hydrochloric acid, HCl)
Vinegar (acetic acid solution)
Rubbing alcohol (isopropyl alcohol)
Sodium hydroxide (NaOH) solution
Post Laboratory Questions
Compare your observations of the conductivity of dry sodium chloride and a solution of sodium chloride. What conclusions can you make about these observations? Interpret your observations; do not just restate what you saw. Keep in mind the conductivity, if any, of the water used to prepare the solution.
Using a solution of KMnO 4 has a percent transmittance of 27.3 percent when observed in a 1.15-cm cell at a wavelength of 525 nm. Compute the absorbance of this solution.
In the double stranded helix structure of DNA, which bases are always hydrogen bonded to the following: cytosine, thymine, adenine, and guanine
What is the percent ionization of HA in 0.11 mol/L HA(aq) if HA is a weak acid with pKa=6.00. Enter your answer accurate to three significant figures
Given that the total number of atoms on our planet remains fairly constant, how is it ever possible to deplete a natural resource such as a metal
The optimal temperature for the action of lactate dehydrogenase is 36*C. It is irreversibly inactivated at 85*C, but a yeast containing this enzyme
considering the heisenbergs uncertainty principle compute the uncertainty in the position of a 1.50-mg mosquito moving
How many trees are required to offset the carbon dioxide emissions from an individual who drives 15000 miles every year at a fuel efficiency of 30mpg? Average tree removes 610 kg of CO2 every year, formula for gas is C8H18 with density of .73 mL O..
the half life of a second order reaction in reactant a with an initial concentration equal to 0.200 m is 45.6 sec. what
Question- An ideal gas is allowed to expand from 6.80L to 17.0L at constant temperature. By what factor does the volume increase. Will the pressure decrease or increase
How many grams of CaH2 are needed to generate 53.5 L of H2 gas if the pressure of H2 is 1 atm at 194 C.
The melting point of a pure compound is 152-153 C. Describe the melting behavior for this compound if it is contaminated with 5% of an impurity.
The allowable concentration level of vinyl chloride,C2H3Cl , in the atmosphere in a chemical plant is 2.4×10-6 .How many moles of vinyl chloride in each liter does this represent? How many molecules per liter?
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