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Draw a "formula" for each of the following molecules using circular symbols of your choice to represent atoms.
a) A diatomic molecule of an element.
b) A diatomic molecule of a compound.
c) A triatomic molecule of an element
d) A molecule of a compound containing one atom of one element and four atoms of another element.
contains 17.0 moles of carbon atoms. How many total moles of atoms does the sample contain?
You titrated 1.740g of a solid unknown acid that wasdissolved in 100.0 mL of distilled water; the initial pH value was 2.5. You found that pH= pKa =4.2 when 12.50 mL of NaOH had been added. The concentration of the sodium hydroxide was 0.500M. Cal..
Calculate the molarity of a sodium chloride brine solution that exhibits a density of 1.13 g/mL and a mass percent of 17.7% at room temp.
The source is used in a double slit interference experiment where the slit spacing is a 0.040 mm, and the distance between the double slits and the screen is 1.2 m. What is the separation between the second- order bright fringes of the two wavelen..
Vitamin C (L-ascorbic acid; MW = 176.0 g/mol) is a weak acid (pKa = 4.863). Suppose a 500.0 mg tablet is dissolved in water and titrated with 0.100 M NaOH. How many mL of NaOH are required to reach the equivalence point?
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Compute the pH of the solution before the addition of any HNO3. Kb of NH3 =1.8 × 10-5.
Draw a stress-strain curve for a metal which you think would be very suitable for use as an axel on an 18 wheeler. Give a very detailed explanation as to why your curve is most suitable.
Nitrogen oxides undergo many interesting reactions in the environment and in industry. Given the following information, calculate H for the overall equation
The value of the Euro is currently $1.32 U.S. and the price of 1 liter of gasoline in France is 0.92 Euro. What is the price of 1 gallon of gasoline in U.S. dollars in France?
Define how you would perform a column chromatographic separation of a polar compound A and two chemicals and C that are non-polar. B is slightly less polar than C.
Describe a chemical test that would allow you to distinguish eugenol from eugenyl acetate?
one can of soda pop is 355 ml. find out the number of tartrazine in milligrams that are utilized while drinking one can
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