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The quantity of solute versus solvent in a solution is known as concentration. First define, the three concentration units, molarity, molality and mass percent. Given that a 2.00 molar aqueous solution of ammonium phosphate has a density of 1.09 g/mL. Calculate molal and mass percent pf ammonium phosphate in solution.
Using A sample having X amount of oxalic acid. If 0.5187 grams of the sample requires 40.20 mL of 0.1000 M Sodium hydroxide to neutralize the oxalic acid completely.
During physical activity, lactic acid (MM = 90.08 g/mole) forms in muscle tissue and is responsible for muscle soreness. An elemental analysis shows that it contains 40.0 mass percent C, 6.71 mass percent H
Draw the mechanism that illustrates the conversion of 2-chloro-2-methylbutane to 2-methyl-2-butyl isopropyl ether with 2-propanol as the nucleophile.
A lactic acid/lactate ion buffer solution contains 0.29 M hc3h5o3 and 0.80 M C3H5O3-, respectively. The Ka value of lactic acid is 1.4X10^-4. Calculate the pH of this buffer.
a liquid unknown was found to be inslouble in water & soluble in cyclohexane & alcohol; the unknown was found to have a boiling point of 58 degress celsius at 670mm Hg. What is the substance? What could you do to confirm your answer?
A wood sample is obtained from a tree that originally grew in 1804 A.D. If the initial rate of decay in 1804 A.D. can be assumed to be 13.56 decays per minute, how many 14C disintegrations have occurred in the sample since that time
A sample of MgCl2 is known to be contaminated with NaCl. A 3.47-g portion of the sample is dissolved in water and treated with an excess of AgNO3 solution.
Write the balanced nuclear equation for the formation of 241/95 Am through beta decay
If the caffeine concentration in a particular brand of soda is 3.35 mg/oz, drinking how many cans of soda would be lethal?
Given the values of So given below in J/mol K, calculate the value of ?So in J/K for the combustion of 1 mole of ethane to form carbon dioxide and gaseous water. S (C2H6(g)) = 230.4 S (O2(g)) = 206.0 S (CO2(g)) = 215.5 S (H2O(g)) = 186.3
what would be the effect on my calculated molecular weight of p-dichlorobenzene if my lab partner left the stopper off of the apparatus while I was weighing the solid p-chlorobenzene. Explain in detail what would happen if this occured and how it ..
A 25.0 mL sample of river water was titrated with 0.0010 M Na2Cr2O7 and required 8.3 mL to reach the end-point. What is the chemical oxygen demand, in milligrams of O2 per liter, of the sample?
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