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2Ba(s) + O2(g) yields 2BaO(s)
25 g of Ba are oxidized to BaO in excess oxygen. the product is isolated, and its mass is found to be 27.0g. What is the % yield of the reaction?
Also what will happen if you place two electrodes in a solution of your product and connect the electrodes to the battery. What will occur?
What is the coordination number of the central metal ion in K3[Co(H20)4Cl2] one, two, four or six
chemiluminescence reaction will actually occur very slowly in air. What component of air will bring about this reaction and what is its approximate concentration in air?
From equation E=kQ1Q2/d and the ionic radii given in the figure , calculate the potential energy of the following pairs of ions. Assume that the ions are separated by a distance equal to the sum of their ionic radii.
Write balanced, net ionic equations when the following compounds are mixed. Indicated mixtures where no reaction is expected with the notation no rxn.
The mercury in a 0.7325 gram unknown sample was precipitated with excess par aperiodic acid, H6IO5, according to the following balanced chemical equation:
Dry air at 1.0 atm is passed over a high voltage electric discharge (~15,000v) to convert 0.85% O2 to O3. The ozonized air is then euilibrated withwater at 25 degrees celcius in a vessel which contains
a sample of hydrogen effuses through a porous container about 9.00 times faster than an unknown gas. estimate the molar
A 155 g sample of an unknown substance was heated from 25.0°C to 40.0°C. In the process, the substance absorbed 5696 J of energy. What is the specific heat of the substance?
Calculate the osmotic pressure of a solution containing 18.55 of hemoglobin in 13.7 of solution at 24. The molar mass of hemoglobin is .
Write and equation that represents the reaction of 2% ethanolic PBP solution with 4-methylcyclohexene and name the product
An alloy containing Al is analyzed. All the solution reacts with 212mL of 0.493M HCl in the 2.500g sample of alloy. calculate the mass percent of Al in the alloy.
A mixture of 82.49 g of aluminum ( Picture = 26.98 g/mol) and 117.65 g of oxygen ( Picture = 32.00 g/mol) is allowed to react. What mass of aluminum oxide ( Picture = 101.96 g/mol) can be formed?
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