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The quantity of antimony in a sample can be determined by an oxidation reduction titration with an oxidzing agent.
A 7.05 g of stibnite, an ore antimony, is dissolved in hot, concentrated HCL and passed over a reducing agent so that all the antimony is in form Sb^3+ (aq). The Sb^3+ (aq) is completely oxidized by 32.0 mLof a 0.125 M (aq) solution of KBrO3(aq).
The unbalanced equation for the reaction is...
BrO3^-(aq) + Sb^3+ (aq) ---> Br^-(aq) + Sb^5+ (aq)
Calculate the amount of antimony in the sample and it percentage in ore.
The radius of the Earth is approximately 6370 km. if one could dig down straight towards the center of the Earth, one would find that the innermost 3480 km (the core) has an average density of about 11.g/cm^3.
For each line in the hydrogen spectrum, how do you deduce n2 (the upper state) and n1 (lower state) and if you could record the absorption spectrum of hydrogen gas, what would it look like?
when 56.6g of calcium and 30.5g of nitrogen gas underfo a reaction that has a 93.0% yield, what mass g of calcium nitride forms.
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A hot air balloon is filled to a volume of 44.5 L at 758 torr. What will be the volume of the balloon if the pressure decreases to 748 torr under constant temperature?
determine the total pressure in the flask AND the height difference between the two arms of the manometer.
What is the pH of a solution containing 0.001 M NaHCO3 and 0.002 M NH3? You may assume that both the carbonic acid system
In a titration of HNO3, you add a few drops of phenolphthalein indicatior to 50.00 mL of acid in a flask. You quickly add 20.00 mL of 0.143 M NaOH but overshoot the end point
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