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Classify the following by the sign of delta U for the system: the following can be classified into these three categories (negative,positive, not enough data)
1. The system contracts and the surroundings get cooler.2. The system expands and the surroundings get cooler.3. The system contracts and the surroundings get hotter.4. The system expands and the surroundings get hotter.
How many grams of ice at -9.4 can be completely converted to liquid at 6.2 if the available heat for this process is 5.96×103? For ice, use a specific heat of 2.01 and = 6.01.
an auto mechanic spills 78. ml of 2.5 m h2so4 solution from a rebuilt auto battery. how many milliliters of 1.3 m
Treatment of the solution with ClO- in alkaline solution yields a yellow solution and a colored precipitate. Ions Present- Ions absent
derive the irreducible representations for the normal vibrations of XeF4 and determine which are IR active, which are Raman active
What is the equilibrium concentration of fluorine if the initial concentrations of bromine and fluorine were 0.111 moles/liter in a sealed container and no product was present initially?
Trace amounts of rare elements are found within groundwater and are of interest to geochemists. Europium and terbium are lanthanide-series elements that can be measured from the intensity of their fluorescence emitted when a solution is illuminate..
A student wanted to determine the molar concentration of acetic acid in a commercial vinegar sample. He used a volumetric pipet to deliver 3.00 mL of vinegar to an Erlenmeyer flask, added about 30 mL of water and 3 drops of phenolphthalein indicat..
Radioactive isotopes often occur together in mixtures. Suppose a 190 sample contains , with a half-life of 12 days, and , with a half-life of 4.5 days. If there are initially twice as many calcium atoms as there are barium atoms, what will be the ..
an evacuated empty 276 ml glass bulb weighs 129.6375 g. filled with an unknown gas the bulb weighs 130.0318 g.
Derive explicitly equations for number and weight average molecular weight in a linear polycondensation reaction of A-B type monomers.
The variation of the atmospheric pressure p with altitude h is predicted by the barometric formula to be p = p0 e^(-h/H) where p0 is the pressure at sea level and H=RT/Mg with M the average molar mass of air and T the average temperature. Obtain t..
In 0.04 M NaOH at 20*C, the decomposition of H2O2 and O2 is first order. If the half-life is 654 minutes, what would be the concentration after 100.00 minutes of a solution initially at 0.200 M
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