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The iron in .6656 gram ore sample was reduced quantitatively to the +2 oxidation state and then titrated with 26.753g of .02966M KMnO4 soluton. what is the percent Fe2O3 in the sample
A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10^?6m. Could the electron make a transition from the ground state to a higher energy level? If it does make a transition,
The lid is tightly sealed on an empty 2.0L soda bottle at 25.0 degrees Celsius and 732 mm Hg. If the bottle is heated to 100.0 degrees Celsius, what is the pressure in the bottle?
What is w per mole for a reversible isothermal expansion of an ethane from 5-10 L/mol at 298k assuming a) ethane is an ideal gas and
Calculate the molar solubility of AgBr in 4.0 M NH3. Kf for Ag(NH3)2 is 1.7 x 10^7 and Ksp for AgBr is 5.0x10^-13 5. What is the pH at the equivilaence point when 45 mL of 0.125 M acetic aced is titrated with 0.225 M NaOH? Ka for acetic acid is 1.7..
What is the molar mass of a gas if 1.15 g of gas has a volume of 225 mL at 0 degrees C and 1.00 atm (STP)
Many drugs that arenatural Bronsted bases are put into aqueous solution as their much more soluble salts with strong acids. The powerful painkiller morphine, for example, is very slightly soluble in water, but morphine nitrate is quite soluble in ..
A room with dimensions 7.00m by 8.00m by 2.50m is to be filled with pure oxygen at 22.0C and 1.00atm . The molar mass of oxygen
prepare 10 ml of solution that represents a 4 fold dilution of the stock solution
What is the internal energy change for the gas. Give your answer in joules (J), accurate to three significant figures
Which of the following is/are network covalent compounds A. sodium chloride B. diamond C. quartz (silicon dioxide) D. both B & C
a three carbon species that has a carbon level of zero at each carbon atom. b) two compounds that contain three carbon atoms and have a carbon atom with a carbon level of 1.
What volume (V) of 1.80 M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.87? (The pKa of acetic acid is 4.76.)
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