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hydrogen peroxide is used as a cleaning agent in treatment of cuts and abrasions for several reasons. In the laboratory, small quantities of hydrogen peroxide can be prepared by the action of an acid on an alkaline earth metal peroxide, such as barium peroxide: BaO2(s)+2HCl(aq)=H2O2(aq)+BaCl2(aq); what amount of hydrogen peroxide should result when 1.50g of barium peroxide is treated with 25.0ML of hydrochloric acid solution containing 0.0272 g of HCl per ML? what mass of which reagent is left unreacted?
What is the balanced equation for the combustion of 1-naphthol, C10H7OH, to give CO2 and H2O? Do not include phases.
When 228.4 mg of pure X was burned 627.4 mg of CO2 and 171.2 mg of H2O were obtained. Determine the simplest formula of the compound X.
The temperature of the acid solution increases from 24.2 oC to 29.9 oC. Calculate deltaH for the reaction that occurred.
Assume that a particular reaction evolves 243 kJ of heat and that 28 kJ of PV work is gained by the system....? 1) What are the values of delta E and delta H for the system? 2) What are the values of delta E and delta H for the surroundings?
How many moles of OH were used to reach the end point? How many moles of H from HCl were used for back titration? How many moles of H from the solid were neutralized? What is the equivalent mass of the unknown acid?
A vinegar sample contained 5.20 % acetic acid. How may mL of 0.450 N sodium hydroxide would be required to titrate 25.00 mL of the vinegar sample
The bond energies are: C H 416 kJ/mol; C C 356 kJ/mol; C C 598 kJ/mol; O O 498 kJ/mol; C O 803 kJ/mol; H O 467 kJ/mol.determine the heat of combustion of ethylene ?
Zn + 2HCl → ZnCl2 + H2 If 0.600 gram of zinc is used, what is the amount of zinc chloride that is produced in the above reaction?
For each of the following unbalanced equations calculate how many moles of the second reactant would be required to react completely with 0.413 mole of the first reactant. Al + H20SO4 ----> Al2(SO4)3 + 3H2
What is the maximum no of S.F possible in final result (concentration of NaOH)? Explain.
When gaseous nitrogen,hydrogen & ammonia are mixedin a closed vessel at room temperature no apparent change in the concetrations of regardless of the original amount of gases.
Calculate the energy produced when 15 grams of liquid methanol (CH3OH) is completely burnt in air to produce carbon dioxide gas
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