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Toxicologists use the term LD50to describe the number of grams of a substance per kilogram of body weight that is a lethal dose for 50 percent of test animals. Calculate the number of arsenic(VI) oxide molecules corresponding to an LD50value of 0.015 for a 184-lb man, assuming that the test animals and humans have the same LD50.
Which of the following would be expected to have a bent (angular) shape?
solution made from 6.50g of an unknown compound in 27.8g of diphenyl has a molality of .195m. Calculate the molar mass of the unknown.
If 25mL of 0.2 M H3PO4 solution is required to neutralize 60mL of a Ba(OH)2 solution then what is the molarity of hte Ba(OH)2 solution
A student dissolves 0.2975 g of the unknown weak acid to give 100. mL solution. S/he obtains the following titration curve for his/her best titration. At the equivalence point, 19.0 mL of 0.1000 M NaOH was added.
On problem 22 part C, Define how you find the units of the rate constant and tell me what does M-2 mean Is it .01x M
How many planes of symmetry does a benzene molecule possess? What chloro-substituted benzene of formula C6HnCl6-n has exactly four planes of symmetry
Ethylene glycol, CH2(OH)CH2(OH), an important ingredient in automobile antifreeze, is much more soluble in water than octyl alcohol, CH3(CH2)6CH2OH, because
What are the coefficients in front of C2H6O and C2H4O when the equation given below is balanced. The reaction occurs in aqueous acid.
22.2 mL of 2.50 M stock solution of sucrose is diluted to 50.0 mL. A 11.9 mL sample of the resulting solution is then diluted to 45.0 mL. A 20.0 mL sample of this solution is then diluted to 75.0 mL. What is the concentration of sucrose in the fin..
Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 203.00 pm What wavelength of light would have sufficient energy to ionize the atom
consider two aqueous solutions a and b which contain different solutes. is it possible for solution a to have a greater
What is the formal charge of the N atom in the correct or best Lewis structure for CN-?
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