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A 9.65-L container holds a mixture of two gases at 11 °C. The partial pressures of gas A and gas B, respectively, are 0.397 atm and 0.519 atm. If 0.160 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?
Problem- Molal freezing point depression constant is 9.0036 for solvent W. 0.460 grams of unknown compound Z to 8.050 grams of solvent W and measures a new freezing point 59.8 C for this mixture. What is the molecular weight of unknown compound Z
At 0.0oC, if the volume of air is 3.1 mL and the pressure of the atmosphere that day is 815 mmHg, what is the number of moles of air?
1. Fat has a lot of kcal, and many people are carrying too much weight. Should humans consume fat? If so, what kind (be specific, using the names [not just types] of the fatty acids) and why.
in a seperatory funnel you have 2 phases with both liquids being clear and having roughly the same volume. you know one
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
CdS has a band gap of 2.4 eV. If large crystals of CdS are illuminated with ultraviolet light, they emit light equal to the band gap energy. What color is the emitted light? Would appropriately sized CdS quantum dots be able to emit blue light?
Calculate DE, and determine whether the process is endothermic or exothermic for the following cases: q = -142 kJ and w = -530 kJ.
If you want to feed everyone, but still have equal numbers of buns and hot dogs, what is the minimum number of packages of buns and hot dogs you need, respectively?
Why is ratio the surface energy to the enthalpy of vaporization much less than one half?
A stoichiometrically equivalent amount of Fe2O3
Gases diffuse faster compared to liquids because of the reason that the liquid molecules A. are held together by stronger inter-molecular forces.
How many liters of water are required to dissolve 1 g of barium sulfate. What is the solubility of barium sulfate in parts per million
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