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What is the concentration (in M) of the nitrate ion when 18.4 mL of a 0.744 M solution of sodium nitrate is combined with 15.9 mL of a 0.734 M solution of copper(II) nitrate? Assume the volumes are additive.
The isomerization of cyclopropane to form propene is a first-order reaction. At 760 K, 85% of a sample of cyclopropane changes to propene in 79.0 min. Determine the rate constant for this reaction at 760 K
An unknown amount of Lithium hydroxide is dissolved in 50.0 mL of water. If it take 14.7 mL of a 0.150 M solution of oxalic acid (H2C2O4) to neutralize the lithium hydroxide solution, what is the mass of lithium hydroxide (in grams) that was disso..
The density of an unknown gas is 2.00 grams per liter at 3.00 atmospheres pressure and 127 degrees C. What is the molcular weight of the gas?
Two vessels are labeled A and B. Vessel A contains NH3 gas at 73 degrees C and vessel B contains Ne gas at the same temperature. If the average kinetic energy of NH3 is 7.1 10-21 J/molecule at 70 degrees C.
calculate the change internal energy (E) for a system that is giving off 45.0kJ of heat and is performing 855J of work on the surroundings.
Consider the sublimation of mothballs at 27 C in a room having dimensions 7.5ft x 11.0ft x 7.1ft. Assume that the mothballs are pure solid naphthalene (density 1.16 g/cm3) and that they are spheres with a diameter
Maria wants to plant a small tomato garden in her yard. She bought 25 tomato plants, and she has read that ideally tomatoes are planted in a square grid
if grams of ammonia are reacted with 4.75 grams of oxygen gas, how many grams of nitrogen oxide will be produced.
The water level in a graduated cylinder was at 211 rises initially it raised to 270 after adding a piece of lead is submerged. Determine the mass in grams of the lead?
At 0.0oC, if the volume of air is 3.4 mL and the pressure of the atmosphere that day is 695 mmHg, what is the number of moles of air?
Which of the following substances, when added to a saturated solution of AgCO3, will increase the solubility of AgCO3 in the solution?(select all that applies)
If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity'
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