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A gas sample containing 1.65 mol at 25°C exerts a pressure of 413 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
a solution was prepared by mixing 50.00 ml of 0.190 m hno3 and 124.00 ml of 0.150 m hno3. calculate the molarity of the
what is the purpose of using acetic anhydride in an experiment reacting with salicylic acid to produce acetylsalicylic
Draw the complete Lewis Dot Structure, and identify for each molecule the shape, the hybridization on the central atom
How many grams of CuSO4 5H2O are needed to prepare 100 ml of a .15 m solution CuSO4
a solution to replace potassium loss contains 38 meql each of k and cl-. how many moles of k are in 2.0 l of the
Hello everyone, I was wondering if someone could assist me in this problem. The problems says "We have 500 mL of a solution with Ba^(2+)=0.10M. How many grams of LiF must be added to begin precipitation of BaF2
A certain first-order reaction has a rate constant of 1.00x10-3 s-1. How long will it take for the reactant concentration to drop to 1/8 of its initial value?
The Ka of acetic acid is 1.85 x 10-5. What would be the pH of a buffer prepared by mixing 50.0 mL of 1.0 M potassium acetate with 50.0 mL of 1.0 M acetic acid?
A 0.1946 g piece of magnesium metal is burned in a constant volume calorimeter that has a heat capacity of 1349 J/°C.
What is the rate constant of a first-order reaction that takes 215 for the reactant concentration to drop to half of its initial value?
Diamond and graphite are two crystalline forms of carbon. In which form are the bonds between the C atoms arranged at tetrahedral angles to each other? 1. diamond 2. Neither of these 3. graphite
At what temperature will nitrogen gas (N2) have the same density as helium gas (He) at 27 degrees C and constant pressure
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