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A 26.0 g sample of chromium (Cr) reacts with sulfur (S) to form 50.0 g of chromium sulfide. Determine the formula for the chromium sulfide and the charge on the chromium ion.
calculate the work done in joules against a pressure of 1.0 atm at 25oc. if 3 moles of h2 react with 3 moles of cl2 to
The partial pressure of carbon dioxide is 675 mm Hg. If argon gas added to the mixture causes the total pressure to become 2410 torr, what is the partial pressure of argon? Report your answer in atm.
The water resulting from the melted ice reaches the temperature of your skin, 29.1 °C. Explain how much heat is absorbed by the ice cube and resulting water. Presume that all the water remains in your hand. Constants may be found here.
When burned in oxygen, 10.0 g of phosphorus generated enough heat to raise the temperature of 2950 g of water from 18.0oC to 38.0oC. The heat of formation of P4O10 from P4(s) and O2(g) is:
a hydrocarbon with an empirical formula CH2 has a density of 1.88 grams per liter at 0 degress C and 1 atm. What is a possible formula for the hydrocarbon?
If a 7.0 mL sample of vinegar was titrated to the stoichiometric equivalence point with 7.5 mL of 1.5M NaOH
If 2.45 g of N2H4 reacts and produces 0.650 L of N2, at 295 K and 1.00 atm, what is the percent yield of the reaction?
synthesis gas can be made by reacting red-hot coal with steam. estimate the temperature at which the equilibrium
Compare and contrast the three major Acid-Base Theories, Arrhenius, Bronsted- Lowry and Lewis. Give approximate explanations of the dynamics, and provide at least three examples that illustrate each of the theories' major points.
Combustion analysis of 1.200 g of an unknown compound containing carbon, hydrogen, and oxygen produced 2.086 g of CO2 and 1.134 g of H2O. What is the empirical formula of the compound
How many MOLECULES of phosphorus triiodide are present in 3.72 moles of this compound
The first of these organophosphorus insecticides to be produced was tetraethyl pyrophosphate, TEPP, which is 33.11% carbon, 6.95% hydrogen, 38.59% oxygen, and 21.35% phosphorus. It has a molecular mass of 290.190. What is the molecular formula for..
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