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Specified the refraction index of yellow light to be 1.50 with glass, 1.33 with water and 1.00 with air, Explain what is the % loss of intensity when light passes through a glass cell filled with water.
draw the Lewis structure with all bonds and lone pairs (b) indicate directions in all bond dipoles (c) indicate the molecular dipoles and (d) indicate the shape of each molecule.
Determine the enthalpy change when 23.5 g of carbon is reacted with oxygen according to the reaction C(s) + O2(g) CO2(g) delta H = -394 kJ/mol
What is the energy, in J/photon, of electromagnetic radiation that has a frequency of 2.89 x 1015Hz ? Express your answer to 3 significant figures in scientific notation and do not include units.(4.45 x 10-3 can be represented in scientific notati..
pH will be greater than 7 at the equivalence point. C. titration will require more moles of base than acid to reach the equivalence point. D. pH will be equal to 7 at the equivalence point. E. titration will require more moles of acid than base to..
Why does the color of a precipitate change from the color of the original solution. For example, if copper sulfate is blue, why is it's precipitate white
if 19.65mL of .145M nitric acid is required ti neutralize 50.0mL of barium hydroxide what is the molar concentration of the base? 2HNO3+Ba(OH)2-->Ba(NO3)2+2H2O
A 155 mL sample of rainwater is titrated using 0.0095 M NaOH solution. If 4.8 mL of the NaOH solution was required to reach the endpoint, what was the pH of the rainwater?
The hydrogen gas formed in a chemical reaction is collected over water at 30 at a total pressure of 737. What is the partial pressure of the hydrogen gas collected in this way
Presuming tge distribution of these patients' cholesterol level measurements follows the Gaussian rule define what is the possibility that a sample contains the cholesterol level between 244 mg/dL ans 275 mg/Dl
If 25 g of al and 100g of br2 are reacted and if 64.2 grams of aliminum bromide is formed. what is the limiting reagent
Which of the reactions below are redox reactions. a- 2Na+Cl2--->2NaCl b- Fe+NiSO4---->Ni+ FeSO4 c- AgNO3+NaCl---> AgCl2+NaNO3
how does the first ionizaiton energy of the alkali metal in a given period compare with the first ionization energy of the halogen in the same period. what is the result in terms of how these elements tend to react with each other
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