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A sample of ammonia, NH3, contains 3.3 x 1021 hydrogen atoms. How many nitrogen atoms are in this sample?
After the reaction was complete, nitric acid was added to dissolve the AgSO3 but not the AgSe. The Ag+ from the dissolved Ag2SeO3 and the excess reagent required 16.74mL of 0.01370 M KSCN in a Volhard titration. How many milligrms of Se were conta..
what the oxidation state P in PO4^-2? what the oxidation state O in PO4^-2?
How many mL of water (density = .997g/ml at 25 degree C) are needed to dissolve 10.0g of NH4NO3 in order to prepare a .100m ammonium nitrate solution?
Identify which of the following statements about the halogenation of alkane hydrocarbons are correct. a) Halogenation of alkanes follows a chain mechanism.
Using the Nernst Equation, calculate the voltage for a concentration cell with: Cu (s)| 0.01 M Cu2+|| 1.0 M Cu2+| Cu (s)
You titrate a 425 mL sample of an acide mine drainage with a 0.32 M solution of NaOH. It takes 22.4 mL of the sodium hydroxide to reach the equivalance point
Draw all stereoisomers having molecular formula C6H12 that contain one double bond and give the IUPAC name for each compound.
The solubility product constant (Ksp) for the dissolution of SrSO4 as represented by the chemical equation is 2.5 x 10-7.
The equation for the oxidation of ethanol by alcohol dehydrogenase (ADH) is CH3CH2OH + NAD+ ? CH3CH) + NADH + H+. The extinction coefficient of NADH is 6220 M-1 cm-1 + H+. If you incorrectly transcribed the extinction coefficient as 16220 M-1 cm-1..
1. some sulfuric acid is spilled on a lab bench. it can be neutralized by sprinkling sodium bicarbonate on it and then
What is the value of q when 0.0209 g of water vaporizes at 373 K? The enthalpy of condensation of water at 373 K is -40.7 kJ/mol.
if 50L of Argon and Helium are mixed at STP then What is the ratio of molecules of Argon to molecules of Helium in the gaseous mixture?
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