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A 2.500 gram sample of a hydrate of calcium sulfate loses 0.523 grams of water when heated. Determine the mass percent of water in the hydrate and the formula of the hydrate.
How much heat is required to warm 215 g of ice from -44.1°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
A chemist burns 160g of aluminum oxygen to produce aluminum oxide. She produces 260g of aluminum oxide. Write a balanced equation and calculate the theoretical and percent yield
an electron is confined to a one dimensional box of length l it falls from the second energy level to the ground state and releases a photon with a wavelength of 322 nm. what is the length of the box
what would be the major product obtained from the reaction of Br2 with 1-butene if the reaction were carried out in
At what pH will precipitation of Al(OH)3 begin if 5.40 lb of aluminum sulfate, Al2(SO4)3, is added to 1150 gallons of water (with a negligible change in volume)
What is the maximum amount of silver (in grams) that can be plated out of 4.8 {rm L} of an {rm{AgNO}}_3 solution containing 3.6 % {rm Ag} by mass? Assume that the density of the solution is 1.01.
What mass of carbon dioxide is produced from the complete combustion of 6.20×10?3 of methane
the reaction: 2C2H6(g) + 7O2(g)-----> 4CO2(g) + 6H2O(g) is exothermic. predict under what conditions of temperature (low, high, all or none) the reaction is expected to be spontaneous
Cd2 forms two complexes with C2H3O2, with the following formation constants:(a) Find K2 for the reaction, (b) You prepare 1.00 L of solution containing 0.110 mol CH3CO2Na and 4.00 × 10-4 mol Cd(ClO4)2. Compute the fraction of cadmium in the form ..
Meaning, use and calculation of empirical formulas, In this introduction are given the explanation of how to find out an empirical formula if one has found out the chemical elements of an unknown substance and measured their ratio of masses
Identify the oxidizing agent and reducing agent. Determine the number of electrons transferred in the balanced chemical equation.
Sulfur dioxide is released in the combustion of coal. Scrubbers use aqueous slurries of calcium hydroxide to remove the SO2 from flue gases
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