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One gram of solid calcium sulfate, CaSO4(s), is added to 500 mL of pure water. Immediately, the solid begins to dissolve according to the following reaction:CaSO4(s) ? Ca2+ + SO42-
What is the concentration of dissolved sulfate in the water once equilibrium is achieved? If additional 10 grams is added, what would be the new equilibrium concentration of calcium sulfate?
Empirical formula and molecular formula, 2) Two substances Q and R each have the elemental composition C = 60% h=13.3% 0=26.7% by mass 0.60 grams of each substance occupied a volume of 0.336 liters at 137 Celcius and standard pressure
A tanker truck carrying 6.05×103 of concentrated sulfuric acid solution tips over and spills its load. The sulfuric acid solution is 95.0 by mass and has a density of 1.84 Sodium carbonate (NaCO3) is used to neutralize the sulfuric acid spill.
Calculate the total heat required (in joules) to convert 3.95 grams liquid ethanol (C2H5OH) at 25.0 °C to gas at 95.0 °C, given that the boiling point of ethanol is 78.5 °C, heat of vaporization is 40.5 kJ/mol, the specific heat of liquid ethanol is ..
Estimate the vapor pressure at temperatures of 273, 298, 363, 383, and 423 K respectively
What polypeptide would be synthesized from the following template strand of DNA:3' CGG AGA CGG ACG 5'. What is the amino acid sequence that is coded by mRNA sequence 5' AAG GCU AGU GGC 3'
What volume, in liters, of hydrogen gas measured at STP can be produced from 50mL of 6.0 M hydrpbromic acid and ac excess of zinc metal, according to the following reaction: 2HBr(aq)+Zn(s) -> ZnBr2 (aq)+H2(g)
Imagine a unit of charge called the zorg. A chemist performs the oil drop experiment and measures the charge of each drop in zorgs.
the enzymes used in this experiment are only a partially purified pyruvate kinase preparation. this is because complete
What is the pH of a solution that contains three parts of acetic acid and one part sodium acetate?
basketball with a volume of 3.50 Liters is left in a car when the temperature is 298 K. What will the volume of the ball be as the car heats up to 305 K during the day?
question which of the following reagents might serve as the basis for a simple chemical test that would distinguish
What mass of solid sodium fluoride (molar mass = 41.99 g/mol) should be added to 1.0 L of 0.23M hydrofluoric acid to make a buffer with a pH of 2.94? (Ka of HF = 1.36 x 10-3)
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