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Lake Titicaca is situated at an altitude of 3810 m in the Bolivian Andes. Determine the atmospheric pressure and calculate the solubility of oxygen in the lake at a temperature of 5°C. (The Henry's law constant at 5°C is 1.9 x 10-8 mol L-1 Pa-1)
Problem- Urea ((NH2)2CO) can be formed from ammonia and carbon dioxide as shown in the following reaction. The ?H° value for this synthesis is -134.0 kJ. Calculate the ?H°f for urea.
Sodium hydroxide, NaOH, is a strong base that is sometimes used as a cleaning agent since it can be used to dissolve proteins, grease, oils, and fats. Rank the following in increasing order of their molarity.
Ephedrine was once used in diet pills that could be purchased without a prescription. Ephedrine is composed of 72.7% C, 9.15% H, 8.49% N, and 9.68% O.
Lead is a toxic metal that affects the central nervous system. A Pb contaminated water sample contains 0.0012 % Pb by mass. Q) How much of the water (in mL) contains 160mg of P}? (Assume a density of 1.0 mg/mL)
A 1.95 gram sample of sodium sulfate hydrate lost 0.756 gram of water when heated to constant mass. What is the formula of the hydrate?
A) How many L of NH3 is formed? B) How many L of the excess gas remains unreacted? C) How many grams of NH3 are formed?
Question- List the following aqueous solutions in order of increasing boling point: 0.040 m glycerin; 0.020 m FeCl3; 0.030m methanol (CH3OH). m indicates molality
Many hospitals, and some doctors\' offices, use radioisotopes for diagnosis and treatment, or in palliative care (relief of symptoms such as pain). Some radioisotopes used in medicine are listed below.
It is also noted that NO3 is a reaction intermediate. Suggest a plausible reaction mechanism
What is the maximum mass of sucralose (C12H19Cl3O8) you can add to 2.50 kg of pure water and still have the solution freeze? Assume that sucralose is a molecular solid and does not ionize when it dissolves in water.
for swimming 1500 m in a long course pool is 14 min 34.56 s. At this rate, how many seconds would it take to swim 0.650 miles? (1 mi = 1609 m.)
NaOH required for titration of 10 mL of monoprotic acid solution. What was the original concentration of acid? What was the original pH of acid solution if its pKa is 5.3?
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