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The decomposition of substance A to produce products is first-order with a rate constant of 3.34 x 10-3/min. If the initial concentration is 4.11 x 10-4 mol/L, what is the molar concentration of A after 108 min?
1.70 x 103 mol/L
0.697 mol/L
2.46 x 10-4 mol/L
2.87 x 10-4 mol/L
2.13 x 10-4 mol/L
2.62 x 10-4 mol/L
K = 0.040 for the reaction below at 450C. If the reaction starts with .20M Cl2 and .20M PCl3 what concentration of PCl5 will be present at equilibrium PCl5(g) PCl3(g) + Cl2(g)
How many moles of Ammonia gas can be produced from reacting 4.5 Moles of Nitrogen gas
in a laboratory, 6.82 g of Sr(NO3)2 is dissolved in enough water to form 0.500 L of solution. A0.100-L sample is 0.0245 M solution of Na2CrO4.
Consider 4.90 L of a gas at 365 mmHg and 20. degrees celisus . If the container is compressed to 3.00 L and the temperature is increased to 40.degrees celisus , what is the new pressure, P2, inside the container
A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92% (w/v) NaCl in water. How many grams of NaCl are contained in 729 mL of this solution.
Calculate the individual concentrations of C and of D in the following unknown mixture: Compound C: Absorbance at 365nm = 0.150 Absorbance at 470nm
A beaker has a mass of 85.6 g when empty and 110 g when it contains 38.7 mL of pentane. What is the density of pentane
what is the mass in mg of 2.5 x 1018 atoms of americium-241 present in the smoke detectors if a tiny speck of
Write the electron configuration of the atom in the third row of the periodic table that has the smallest E_{{rm{i}}4}.
A sealed glass jar has a small amount of water on the bottom. The rest of the volume in the jar is taken up by helium gas at a partial pressure of 526 mmHg, and water vapor. If the total pressure inside the jar is 760. mmHg, what is the temperatur..
A flask of nitrogen is collected over water at a total pressure 765.0 mmHg. If the partial pressure of the water vapor is 25.0 mmHg, what is the pressure exerted by the nitrogen?
An alkyne of six carbon atoms gives the same single product in its reaction either with BH3 in THF followed by H2O2 /OH-, or with H2O/Hg2
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