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Fermium-253 has a half life of 0.334 seconds. A radioactive sample is considered to be completely decayed after 10 half lives. How much time will elapse for this sample to be considered gone?
A 345 mL container holds NH3 at a pressure of 745 torr and a temperature of 45 degrees Celsius. What is the molar concentration of ammonia in the container?
Write the VSEPR Aformula for the N atom as the central atom in glycine. What is the approximate C-N-H bond angle. Explain on the basis of VSEPR theory. What is the approximate O-C-O bond angle. Explain on the basis of VSEPR theory.
What is the theoretical yield of aspirin if 167 kg of salicylic acid is allowed to react with 123 kg of acetic anhydride?
Carbon NMR has only the following peaks: 29.8, 36.1 and 206.8 ppm. Propose a structure of this compound and explain splitting pattern and the ratio
yellow sodium light is made up of photons of two wavelengths. 589.0nm and 589.6nm. what is the difference in energy
the method of initial rates involves substituting the initial reactant concentrations into rate calculations. when you
A spherical fat cell has a diameter of 2.47 micrometers. The fat cell contains three copies of the protein azurin. What is the molar concentration of azurin within the fat cell
Problem- A 16.5-mL sample of tartaric acid is titrated to a phenolphthalein endpoint with 20. mL of 1.0 M NaOH. Assuming tartaric acid is diprotic, what is the molarity of the acid?
By titration against a standardized potassium permanganate solution in an acidic medium according to the following equation: 2 MnO4- + 5H2O2 + 6H+ -----> 5O2 + 2Mn2+ + 8H2O If 36.44 mL of a 0.01652 M KMnO4 solution are required to completely oxidi..
The methylamine hydrochloride dissociates completely in water to form methylammonium ion (CH3NH3+) and chloride ion.
how much energy is needed to convert 180 grams of ice at -10ordmc to liquid water at 10 ordmc? the molar heat capacity
Write a balanced equation for the reaction. What volume of 0.200M MnO4- solution is needed to titrate 22.5mL of a 0.350M solution of ethanol?
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