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Phosphorus pentachloride gives an equilibrium mixture of PCl5, PCl3, and Cl2 when heated
PCl5(g) PCl3(g) + Cl2(g)
A 1.00 L vessel contains an unknown amount of PCl5 and 0.020 mol each of PCl3 and Cl2 at equilibrium at 250?C. How many moles of PCl5 are in the vessel if Kc for this reaction is 0.0415 at 250?C.
what is the molar solubility of magnesium hydroxide? what is the solubility product, ksp, for magnesium hydroxide? Express the Ksp with the correct number of significant figures.
How much heat in joules is required to heat a 46 {rm g} sample of aluminum from 80 F to 146 F?
How much potassium nitrate has to dissolve in water to absorb 114 kJ of heat?
Archeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive slope 14C present in the object. The amount of isolope decreases in a first-ordrr process.
Write a balanced equation to show the polymerisation of the molecule CF2CF2. Show two repeat units of the polymer.
The gas is heated to 520.0 K at a constant volume corresponding to the initial volume c) The gas undergoes a reversible isothermal expansion at 290.0 K until the pressure is half of its initial value
In an experiment 1.65g of lead(ii) nitrate react with .327g of zinc. What is the mole relationship between the lead nitrate and the zinc.
Determine the empirical formula of a compound containing 3.16 g of silicon and 16.0 g of chlorine.
The sensitivity of a spectrophotometer allows detection of 1 percent of one colored form of an indicator for example HIn in the presence of 99 percent of the other colored form In-. Based on this fact, over what pH range relative to its pK can an ..
Cholesterol is a compound suspected of causing hardening of the arteries. A 5.02 g sample of cholesterol was analyzed, and the following data was obtained
what is the molar mass of a gas that has a density of 1.02g/L at 0.990 atm pressure and 37 o C
using a solution having pb2 ions 1x10-2 m that is mixed to a solution of i- ions of 2 x 10-4m. show whether or not a
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