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Explain when heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction
CaCO3(s)?CaO(s)+CO2(g)
Explain how many grams of calcium carbonate are needed to produce 59.0L of carbon dioxide at STP?
calculate the percentage ionization of benzoic acid at the following concentration : assume the approximation for both cases to be correct : a) 0.20M b) .0.00020M
A piece of copper of mass 20.0g at 100.00C is placed in a vessel of negligible heat capacity, but containing 50.7g water at 22.0C. Calculate the final temperature of the water. (Assume no energy is lost to surroundings)
At certain temperature, Kc for the reaction, PCL5->
A cylindrical bar of copper 1.25 meters long and 2.22cm in diameter is initially at a temperature of 14°C. The bar is heated until it increases length by 1.77mm.
What is the volume of 290. mL of oxygen gas at 112°C and 790. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.
calculate the minimum volume of 1.10m cuso4 solution that is required to ensure complete reaction of 1.04g of fe. since
Consider the combustion reaction of acetylene (C2H2), H2O(l) is one of the products. Which of the following statements are correct? Choose all that apply.
The purity of a 0.287 -g samole of Zn(OH)2 is determined by titrating with a standard solution, requiring 37.8 mL. The HCL solution was standardized by precipitating AgCl in a 25.0-mL aliquot
When an amino acid is dissolved in a buffer solution, the pH of which is less than the isoelectric point of that amino acid, and an electric current is passed through the solution
determine the ph of an equilibrium aqueous mixture of 1.0 m glycine gly and 0.5 m hcl assuming that pkdnan 9.8 for the
The free radical chlorination of isobutane at 25C yields 64% isobutyl chloride and 36% tert-butyl chloride. However, free radical bromination of the same compound at 127C yields only trace amounts of isobutyl bromide and 99% of tert-butyl bromide
At 25 C and 1.0 atm pressure, what is the minimum quantity of dry air needed to combust 1.1 L of CH4 (g) completely to CO2(g). Remember that oxygen is present in the atmosphere to the extent of 209480 parts per million.
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