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Identifying the primary species (atoms, molecules, or ions) present in an aqueous solution of each of the following compounds. Decide which species are Bronsted acids or bases and whether they are strong or weak: (a). NH3, (b). CH3CO2H, and (c). NaOH.
Calculate how long will it take for a sample of radionuclide with a half-life of 27.1 days decay to 1.0% of its original value.
"Hard" water contains relatively high concentrations of dissolved calcium ions. Calculate the solubility (in molarity) of CaHPO4·2H2O at 25°C in hard water that initially contains 95 mg/L of Ca2+
A mixture of 6.0 mol of H2(g) and 3.0 mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 26 Celcius. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the w..
If the gas is an ideal gas, what pressure would develop in the can if it were heated to 475oC?
What mass of salicylic acid is needed to produce one extra strenght tablet of aspirin if the reaction has 60% yield. Please show work and correct sig figs.
Equal volumes of 0.1 M solutions of KOH and HNO3 are mixed. What is the pH of the resulting solution
An organic compound was synthesized & a sample of it was analyzed & found to contain only C, H, N, O, & Cl. It was observed that when a 0.150g sample of the compound was burned it produced 0.138g CO2 & 0.0556g H2O.
Gas chromatography. Answer the following questions about retention times of the following compounds. Given naphthalene (boiling point = 218 degrees C)
Aluminum has a face-centered cubic unit cell. If the atomic radius of aluminum is 125 pm, what is the edge length of the unit cell? A) 177 pm B) 354 pm C) 217 pm D) 500 pm E) 250 pm 3. The meniscus of mercury curves downward in a glass tube formin..
container Ais filled with air at STP, it is then inserted into a large enclosed container B, which is then flushed with H2(g), what will happen to the pessure inside container A? explain your answer.
Mass Absorbance Recrystallized sample .3040 g .070 concentration of salicyclic acid in the recrystallized aspirin sample solution =.000044 M
With respect to VSEPR theory, how does the number of electrons groups on the central atom determine the molecule's shape. How are the bond angles affected by the presence of non-bonding electrons and -bonds
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