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A subway train has a sound intensity level of 90 dB, and a rock band has a sound intensity level of about 110 dB. How many times greater is the sound intensity of the band than that of the train?
How can you tell when looking at organic compounds what is saturated? Here are some examples?
A certain substance has a heat of vaporization of 44.76 KJ/mol. At what kelvin temperature will the vapor pressure be 4.00 times higher than
Given stock solutions of 3 M Potassium Acetate and 500 mM EDTA, and a jar of solid Tris powder (molecular mass = 121 g/mol), how much of each component (including water) do you need to make 200 mL of a solution of 75 mM Potassium Acetate, 20 mM ED..
Solid melting infinitesimally slowly at its melting point. liquid freezing below its freezing point. liquid vaporizing above its boiling point
At equilibrium the total pressure was 1.00 atm and the NOCl prssure was 0.27 atm. 2NOCl(g) &hArr 2NO(g) + Cl2(g) Calculate the partial pressure of NO and Cl2 in the system
a compound containing carbon amp hydrogen atoms has a deep blue color. complete combustion of 288 mg of the compound
how many total moles of ions are released when each of the follwing samples dissolves completely in water?
1 in an experiment we determined that the heat of areaction bw 1.0m naoh and 1.0m hcl 50.ml of the sodium
Write the equations for the ionization of 3-aminophenol. Would this substance be more soluble in water at pH 2.0 or pH 8.0? Would you expect this substance to be absorbed into the bloodstream in the stomach or the intestines?
Calculate the [SCN] solution A, where 5.3 mL of 1.9x10^-3 M NaSCN is diluted to 42.0 mL with 0.1 M Fe(NO3)3. Next calculate the [FeSCN2+] in the solutions prepared by diluting volumes of solution A with 0.1 M Fe(NO3)3 to a final volume of 1.0101 mL..
Problem- Calculate the binding energy (kJ/nucleon) for a Cu-63 nucleus. H-1 = 1.00785 g/mol, n-1= 1.008665 g/mol, Cu-63= 62.93960 g/mol.
Calculate the ph at the equivalence point in the titration of 40.0 mL of 0.165 M of methylamine (kb = 4.4 x 10^-4) with 0.280 M HCl
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