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A chemist prepares a solution of potassium iodide by measuring out 220. x 10^-6 mols of potassium iodide into a 350 mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's potassium iodide solution. Round your answer to 3 significant digits.
as we know that there are various objects and a lot ofnbsp even biological organisms are invisible to naked eye . there
what amount of heat is produced? The specific heat of aluminum is 0.90J/g C?
Five structural isomers have the formula C6H14. Where needed, draw the structure and give the IUPAC name of all five isomers
A strip of electrolytically pure copper weighing 3.178 gram is strongly heated in a stream of oxygen until it is all converted to a black oxide. The resultant black powder weighs 3.978 g. What is the formula of the oxide
What is the concentration (molarity) of the solution prepared by dissolving 1.83g of Co(NO3)2 in HCl acid to give a total volume of 100 mL
consider the titration of 50.0 ml of 0.217 m hydrazoic acid hn3 ka 2.6 x 10-5 with 0.183 m naoh. calculate the ph of
silver has only two naturally occurring isotopes 107ag with a mass of 106.90509amu and an abundance of 51.84% and 109ag with a mass of 108.9047 amu calculate the atomic mass of silver.
Show the chemistry involved in dissolving iron(II)hydroxide with a strong sodium cyanide solution.
Draw the product for the chlorination of 2-methylbutane that proceeded through a secondary radical
What minimum votage is required to electrolyze anhydrous HF. the H-F bond is so polar that liquid HF is essentially composed of H^+ and F^- ions.
The boiling point of propylamine, CH3CH2CH2NH3, is 48 °C while that for its isomer trimethylamine, (CH3)3N, is only 3 °C. Explain the difference on the basis of the intermolecular forces
Historically, the solid residue that is left after the Dichloromethane -or methylene chloride (CH2Cl2 )solution is evaporated has a lower melting point that its literature value, due to impurities.
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