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State a balanced oxidation-reduction equation showing how zinc metal reduces the ferrous ion, Fe2+, to iron metal
Which of these sublevels may be utilized in constructing a partial orbital diagram for a period 3 element
When 67.7g of calcium and 30.5g of nitrogen undergo a reaction that has a 93.0% yield, what mass of calcium nitride forms
Consider the titration of a 24.0 ml sample of 0.120 M HC2H3O2 with 0.105 M NaOH. Determine the initial pH.
Given 867 mL of a buffer solution that is 0.532 M methylamine and 0.86 M methylammonium chloride, calculate the pH of this solution after the addition of 1.14 g sodium hydroxide. The Kb of methylamine is 4.4x10-4
2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) Heating a 1.7184-g sample of impure NaHCO3 gives 0.196 g of CO2. What was the mass percent of NaHCO3 in the original 1.7184-g sample?
If the pollutant to be removed has a concentration of 100 mg/L and decays by 1st-order kinetics with a rate coefficient of 2.25 d-1, what percent removal is achieved if one uses the theoretical hydraulic retention time of the reactor. What percent..
Calculate the molarity of of each ion present in the solution. Please walk me through the steps I'm trying to help my daughter with her chem. homework and I don't know any chem.
the acetylsalicylic acid into sodium acetylsalicylate but not give excess of sodium hydroxide in your solution? sodium hydroxide has a molecular weight of 40.00grams/mole
find the uncertainty in position in nm associated with anelectron that is moving with a velocity of 274 kms.
on venus the surface atmospheric pressure is about 90 earth atmospheres. what is the venusian atmospheric pressure in
A 0.4564 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide ion is precipitated as AgBr by the addition of an excess of silver nitrate. The mass of the resulting AgBr is found to be 0.8815 g.
Calculate the heat released when 4.00 L of chlorine (gas) with a density of 1.88 g/L reacts with an excess of sodium metal at 25 degrees celcius and 1 atm to form sodium chloride.
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