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How many moles of oxygen are generated during the thermal decomposition of 7.75 g of lead (IV) oxide?
A gram of a salt dissolves in 4.9ml of water to from a saturated solution whose specific gravity is 1.08, how many gram of salt will be contained in 100ml of the saturated solution
Calculate the pH of a solution made by mixing 50.0 mL of 0.100 M NaCN with 11.82 mL of 0.438 M HClO4 . pKa for HCN = 9.21
The standard enthalpy of formation of carbon monoxide is more esothermic than the sum of the standard enthalpies of formation of methane and water.
How many carbon dioxide molecules are generated by the combustion of one molecule of hexane (C7H14) in ample oxygen?
Combustion reactions are exothermic. The heat of reaction for the combustion of cyclohexane, C6H12, is 936.8 kcal/mol. What is the heat of combustion for cyclohexane in kcal/gram
Why must all the lines in the hydrogen spectrum between 2500 A and 7000 A belong to the Balmer series
a new hydrocarbon with molecular formula C20H14 is obtained in low yield. The 13C NMR of this new product shows three peaks in the 120-150 ppm range and one peak at 54 ppm.
What is the pH of a solution made by adding 6.21 grams of sodium fluroide, NaF, to 391 mL of 0.317 M hydrofluoric acid, HF? (Assume no change in volume takes place.)
If a solution is made with 0.125M magnesium nitrate, (Mg(NO3)2), and 0.100M aqueous ammonia (NH3) will a precipitate of magnesium hydroxide form Ksp= 1.1e-10 Kb= 1.8e-5
Treatment of gold metal with BrF3 and KF produces Br2 and KAuF4, a salt of gold. Write a balance chemical equation and identify the oxidizing agent and reducing agent in the reaction
In a particular redox reaction, Cr is oxidized to CrO42 and Ag is reduced to Ag. Complete and balance the equation for this reaction in acidic solution. Phases are optional.
you have 1005.3 g of a bleach solution. the percent by mass of the solute sodium hypochlorite naocl is 3.62. how many
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