What is the molarity of a sodium hydroxide solution
What is the molarity of a sodium hydroxide solution if 27.9 mL of this solution reacts exactly with 22.30 mL of 0.253 M sulfuric acid?
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Protein provide about 4 Calories of energy per gram and fats provide about 9 Calories per gram, what is the total energy equivalent (in Calories) of a bag of chips? What percent of Calories are from fat?
A parachutist descending at a speed of 13.4 m/s loses a shoe at an altitude of 54.2 m. What is the velocity of the shoe just before it hits the ground? The acceleration of gravity is 9.81 m/s2. Answer in units of m/s.
A dead alkaline battery is found to contain a compound of Mn and O. Its analysis gives 69.9% Mn and 30.4% O. What is the empirical formula for the substance?
The expresssion for the freezing point depression of a solution relative to that of the pure solute is shown above. From solutions of known concentrations of p-dichlorobenzene in cyclohexane
A solid acid is dissolved in enough water to make 200 ml of a solution. 40 ml of the solution is titrated to a phenolphthalein end point with an NaOH solution. The neutralized solution and the remainder of the acid solution are then mixed and the
Discuss three effects that urbanization (including flood control efforts) has on flooding. Describe the various types of flooding and how these urbanization features may alter the flooding events and resulting erosion and deposition.
Calculate Ecell for the following electrochemical cell at 25 °C Pt(s) | H2(g, 1.00 atm) | H+(aq, 1.00 M) || Pb2+(aq, 0.150 M) | Pb(s) given the following standard reduction potentials.
A 1.630 -,g sample of naphthalene, C10H8(s)is completely burned in a bomb calorimeter assembly and a temperature increase of 8.46 degrees Celsiusis noted. If the heat of combustion of naphthalene is -5156 kj/mol C10C8, what is heat capacity of th
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