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Question- Suppose that 25.0 mL of a 0.440 M NaF solution is added to 25.0 mL of a 0.320 M Ba(NO3)2 solution. The total ionic equation is: 2NaF(aq) + Ba(NO3)2(aq) ==> BaF2(s) + 2NaNO3(aq). What mass of BaF2 would precipitate.
Explain the each step. Explain the process and each step.
The Ka for HF is 3.5 × 10-4. What would you expect the percent ionization to be for the same concentration of hydrochloric acid (HCl)? Explain.
Calculate the density of a block.
Calculate the percent yield for a student who completed experiment 27A and collected the following data. Give your answer to two decimal places.
the normal boiling point of water is 100.0 degrees c and its molar enthalpy of vaporization is 40.67 kjmol. what is the
Problem- For a gaseous reaction, standard conditions are 298K and a partial pressure of 1 bar for all species. For the reaction
The substance X is an element which has the elemental form of X(s) at 25oC. The standard enthalpy of formation of HXO4(g) is -818.0 kJ/mol at 25oC. The standard entropy of HXO4 (g) and X(s) are, respectively 175.8 J/mol•K and 30.70 J/(mol•K) at 25..
Problem- Provide a mechanism for the removal of a Fmoc (9-fluorenylmethoxycarbonyl) protecting group from an amino group under basic conditions. Please draw the mechanism
Carbon-14 has a half-life of 5730 years. A sample of carbon with a mass of 0.120 g has an activity of 40 decays/hr. The initial specific activity is assumed to have been 900 decays/hr/gram.
Assume ideal gas behavior and that the heat capacity is not temperature dependent
Acyl chloride can hydrolyze in water spontaneously to carboxylic acid. In the interfacial polymerization water is used as one of the solvent, why you don't have to worry about the hydrolysis of sebacoyl chloride in this action
.20g of methyl alcohol, CH3OH, are dissolved in 16.8g of water, H2O. What is the mole fraction of the solute.
The addition of H2 to C=C double bonds is an important reaction used in the presentation of margarine from vegetable oils. If 50.0ml of H2 and 50.0ml of ethylene (C2H4) are allowed to react at 1.5atm, the product ethane (C2H6) has a volume of 50.0..
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