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For each reaction, identify the substance being oxidized and the substance being reduced. Express answers as chemical formulas for oxidized and reduced answers. 1. 2Sr(s)+O2(g)----->2SrO(s) 2. Ca(s)+Cl2(g)---->CaCl2(s) 3. Ni^2+(aq)+Mg^2+(aq)+Ni(s)
A large amount of aqueous ammonia is added to a Cd^2+ solution and the complex ion Cd(NH3)4^2+ forms. Write the equation for this reaction.
Ligands approaching in a tetrahedral pattern cause some orbitals to be raised in energy. How many orbitals are on the lower energy level?
If a 10.00mL sample of unknown concentration of HF is titrated with 28.94mL of 0.1040M NaOH, what is the concentration of HF
An aqueous solution containing 15.6 g of an unknown molecular (nonelectrolyte) compound in 109.5g of water was found to have a freezing point of -1.9 degrees C.
Titanium crystallizes on a body-centered cubic lattice with a unit cell edge length of 3.28 Å. The density of titanium is 4.54 g /?cm3. The atomic mass of titanium is 47.88.
How many moles of chloride ions are there?
What mass of sucrose should be combined with 464 g of water to make a solution with an osmotic pressure of 8.35 atm at 320 K? (Assume the density of the solution to be equal to the density of the solvent.)
Benzoic acid precipitated when the aqueous solution of sodium benzoate in beaker A was acidified. If benzoic acid failed to precipitate after acidification, how would you recover benzoic acid from beaker A
How much potassium nitrate has to dissolve in water to absorb 114 kJ of heat?
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
The decomposition of potassium chlorate (KClO3) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 20.7 mol of oxygen?
Assume all the step reactions except the rate determining step are fast reactions and at equilibrium, which step reaction, do you think, is the rate determining step? (a)Cl2 -> 2Cl (b)H2 +Cl -> H2Cl (c) H2Cl + Cl2 -> 2HCl +Cl (d) none of the above..
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