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A solution of ammonia and water contains 3.30×1025water molecules and 6.90×1024 ammonia molecules.How many total hydrogen atoms are in this solution?
Each atom in HF has a fractional charge of 0.416. What is the dipole moment of HF? 2. Which of the following molecules has a dipole moment? 3. Of the ions below, which ion has the smallest atomic radius?
The specific internal energy of helium at 300k and 1 atm pressure is 3800j/mol and the specific molar volumeat thesame temp. and pressure is 24.63l/mol.
If 3.7 g of butanoic acid, C4H8O2, is dissolved in enough water to make 1.0 L of solution, what is the resulting pH
One weighs 32.78 grams of NaOH and dissolves it in water (with stirring) to the mark in a 1500 mL volumetric flask. What is the molarity of this solution
how many grams of h2o g are theoretically produced from 1026.9 g of sucrose c12h22o11 g and an excess amount of
The halogenation of a hydrocarbon (RH): RH + X2 ? RX + HX may proceed by the mechanism below. Derive the rate law for the mechanism using the steady state approximation. (1) X2 ? 2X (2) X + RH ? R + HX (3) R + X2 ? RX +X (4) R + X ? RX
The vapor pressure of pure methanol, CH3OH, at 30 °C is 160. torr. How many grams of the nonvolatile solute glycerol, C3H5(OH)3, must be added to 131. g of methanol to obtain a solution with a vapor pressure of 133. torr?
calculate the amount of heat required to completely sublime 34.0g of solid dry ice at its sublimation temperature. the
Calculate the pH of the 0.20 M NH/0.26 M NHCl buffer. What is the pH after the addition of 20.0 mL of 0.050 M NaOH to 90.0 mL of the buffer solution? The Kb of ammonia is 1.8 x 10-5.
forty-two 42.0 grams of nitrogen gas at 298 k and 745 torr has a volume of 37.42 l. what volume will it occupy if the
What is the concentration of Co2 ions at equilibrium? Assume the formation constant of Co(NH3)62 is 5.0× 1031.
Describe the lysing process that occurs when performing the "slow freeze quick thaw" procedure for preparing a crude extract of rGFP
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