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When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 16.8g of carbon were burned in the presence of 57.4g of oxygen, 12.6g of oxygen remained unreacted. What mass of carbon dioxide was produced
constant- pressure calorimeter containing 80 g of water at 24.3 C. the final temperature of the system was found to be 28.8 C. Calculate the amount of heat that flowed into the water.
What is the expected freezing point of a 0.50 m solution of Li2SO4 in water? Kf for water is 1.86°C/m.
A 44 sample of water absorbs 329 of heat If the water was initially at 21.7, what is its final temperature.
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32 P, how many grams will remain after 98.0 days?
For the reaction SO3+H2O yields H2SO4, how many grams of sulfur trioxide are required to produce 4.00 mol of sulfuric acid?
Calculate the heat needed at 0 degrees celsius to make each of the following changes of state. kilocalories to freeze 285 of water.
How many grams of magnesium oxide are formed when 16.4 of oxygen gas, measured at STP, completely reacts with magnesium metal according to this reaction
Calculate deltaS(Jmol^-1K^-1) for oxalic acid and delta S (Jmol^-1K^-1) for the combustion of one mole of oxalic acid.
write the mathematical expression for the equilibrium constant, Keq, as a function of the concentrations of the products and reactants for this reaction
An amphoteric compound exhibits a. acidic properties b. acidic and basic properties c. metallic properties d
Standard solution having the molar concentration 0.0130 M AgNO3. What mass of AgNO3 is required for this purpose?
A student standardized her I2 solution by preparing a solution of 0.0450 g of ascorbic acid (vitamin C) in a 100 mL volumetric flask. She titrated several 10.00 mL samples of the Vitamin C solution
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