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Consider a reservoir with a diameter of 450 m and a depth of 10 m. (a) how many liters of 0.10 M NaF should be added to produce 1.6 ppm F? (b) how many grams of solid NaF could be used instead of the solution used in part (a)?
What is the pH of the solution created by combining 2.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)
A graduated cylinder contains 152 mL of water. A 14.0 g piece of iron (density = 7.86 rm{g/cm^3}) and a 16.0 g piece of lead are added. What is the new water level in the cylinder?
A gas is initially at 1.2 atm, 15.0 L, and O°C. What is the final pressure when the same amount of gas is heated to 10°C and the volume changed to 20.0 L
When preparing the solutions for Part A, an aqueous solution of diamine and NaOH is made. Why isn't a solution of NaOH and diacid chloride in cyclohexane made
toothpaste contains 0.24% by mass sodium flouride used to prevent dental cavities. One tube contains 119g of toothpaste. How many moles of NaF are in the tube?
Which of the following chemical equations corresponds to the standard molar enthalpy of formation of N2O
how do you find the concentraton of an isotope from its molarity and molecular weight with no other factors
Would you expect the mineral kaolinite to dissolve more in a water having a high or low pH. Explain.
A weak monoprotic acid is titrated with NaOH, and the following data are recorded. Calculate the molar mass of the weak acid. original volume of acid solution = 50.00 mL mass of acid (a solid) = 0.3459 g
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 14.5 g of HF and 23.0 g of NaF in 125 mL of solution.
Calculate partition coefficient of caffeine between water and each of two organic solvents. (c) Can you use diethyl ether to extract caffeine from water? Why/why not.
Draw the skeletal structure of the major organic product when 2-deutero-2,3-dimethylcyclohexanol is treated with concentrated sulfuric acid under heated conditions
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