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Assume 40 g of solid (NH4)2Fe(SO4)2 * 6H20 was used in 1 l of solution to create the solution tested. What is the theoretical % Fe in a pure sample. Assume that the molecular wt = 392.15 g/mole.
A gaseous fuel mixture stored at 743mmHg and 298 K contains only methane and propane. When 11.8 L of this fuel mixture is burned, it produces 767 kJ of heat. what is the mole fraction of methane in the mixture
What volume (V) of 2.20 M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.26? (The pKa of acetic acid is 4.76.)
If 500 g of KCIO3, decomposes and produces 303 g of KCl, how many grams of O2 are produced?
how many milliliters of 0.42 M solution of acetic acid, CH3COOH, will contain 0.50 grams of acetic acid
State which of the following species has the strongest conjugate base and briefly explain your choice. (a) HSO4- (aq)
Given the equilibrium constant, Kp, of 2.40 x 10-3 at 1000 K for N2(g) + 3H2(g) equation 2NH3(g), what is the equilibrium constant for NH3(g) equation 1/2N2(g) + 3/2H2(g) at 1000 K
calculate th eapproximate freezing points of the following aqueous solutions (assume complete dissociation) a. 0.800 m NaCl b. 0.800 m
A beaker contains 250 mL of .0150 M silver ion. To this beaker is added 250 mL of .300 M bromide ion. What is the concentration of Ag+ in the final solution. Ksp for AgBr = 5.0 x 10^-13
The molecules of a certain gas sample at 313 K have a root-mean-square (rms) speed of 297 m/s. Calculate the most probable speed and the mass of a molecule.
A household lightbulb is a blackbody radiator. Many light bulbs use tungsten filaments that are heated by electric current. What temperature is needed so that λmax=550nm?
Calculate the molality of a solution containing 292g glucose(C6H12O6) dissolved in 1.91L of water.
Calculate the work done in joules by the reaction when 0.21 g of Na reacts with water to form hydrogen gas at 1°C and 3.0 atm in an open container.
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