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Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 6.030×10^-2 mg sample of menthol is combusted, producing 0.1697 mg of C and 6.954×10^-2 mg of H2O. What is the empirical formula for menthol?
In a titration of 29.01 mLs of 0.211 M HCOOH (formic acid, Ka = 1.8x10-4) with 0.255 M KOH, how many mLs of titrant will be required to reach the equivalence point
Considor a beaker of water sitting on the pan of an electronic scale, giving a reading of 110.4g. A lead weight hanging from a string is suspended in the water and the mass reading on the scale increases to 127.9g.
To what volume should you dilute 51 mL of a 13 M stock HNO3 solution to obtain a 0.126 M HNO3 solution
A solution is made by dissolving 15.3g of HCl in enough water to make 4.70x10^2 mL of solution. Calculate the pH of the solution at 25 degree C.
What is theoretical yield of nitrogen monoxide in grams d. How many moles of excess reactant remain e. What is the % yield of the reaction
How much silver iodide, AgI, in grams will dissolve in 1200 ml of pure H2O at 25 degrees Celcius when the system reaches equilibrium
Calcium hydride, CaH2, reacts with water to form hydrogen gas. CaH2(s) + 2 H2O(l) → Ca(OH)2(aq) + 2 H2(g)
Calculate the amount of energy in kilojoules needed to change 117 of water ice at 10 to steam at 125 . The following constants may be useful.
25 cubic centimetres of potassium hydroxide solution were neutralized by 24.0 cubic cenimtre of 1M per decimetre hydrochloric acid. what is the concentration in molar per decimetre of alkali?
A spoonful of sodium chloride is dissolved in a liter of water. What is sodium chloride in this solution?
why do you think the solid kio3 that you willuse to make your primary standard will be dried overnight in
where e is the magnitude of the charge on an electron and ε0 is the vacuum permittivity (a fundamental constant). What is the operator for this potential energy?
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