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The molar mass for NaCl and water are 58.443 g/mol and 18.015 g/mol, respectively. Calculate the partial molar volumes for NaCl and water in a 0.35m solution.
Calculate the number of milligrams of iron in a vitamin tablet when there are 3.9 moles of solute (ferrous fumarate solution)
HCl (aq) + NaOH (aq) ? NaCl (aq) + H2O (l) A known amount of NaOH is added to a solution containing an unknown quantity of HCl (aq).
the likely intermediates in the mechanism and the expected isomeric products from the pathways of the mechnanism. Also please help to identify the major product attained.
Draw the structure of 18-crown-6, a compound that is commonly used to bind certain metal ions
Draw the structure of the alkoxide and the alkyl bromide needed to produce 2-ethoxy-2-methylpropane
Suppose that 0.650mol of methane, CH4(g), is reacted with 0.800mol of fluorine, F2(g), forming CF4(g) and HF(g) as sole products. Assuming that the reaction occurs at constant pressure, how much hea
The reaction that was on the screen when you started and its derivative demonstrate that the change in enthalpy for a reaction, Delta H, is an extensive property.
Which flask has the molecules with the greatest average speed (velocity) a,b,c, they're all the same or non
In the reaction below, 7.57 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) <=> 2 HBr(g) Given that Kc = 11.8, calculate the equilibrium pressure of
Rank the compounds on relative acidities: H2O, H2C=CH2, NH3, HC(triplebond)CCH3, H3CCH3 (STRONG-->WEAK)
show an example of your Ka or Kb calculation for NaC2H3O2 given that the measured pH is 7.20 and the [H+] is 6.3 x 10^-3
What is the activation energy for the reaction shown below k=1.89x10^-8 /s at 540 K and 2.45 x 10^-7 at 601 K
calculate what volume of each 0.50M solution should be mixed to give a total volume of 50.0mL AND the reactants in the correct stoichiometry. Also write a data table in the space given
The amino acid alanine is shown below in several different Fischer projections. Sort the structures according to whether the Fischer projection represents alanine with the R configuration or alanine
Calculate the masses of conjugate acid and base to prepare the buffer. Calculate the volume of strong acid or base needed to prepare the buffer.
What is the reduced pressure of the gas. What is the pressure inside the gas cylinder? (Absolute Pressure). What should the pressure gauge read
Which of the following elements would you predict to have an anomalous electron configuration? A) Se B) Ce C) Ag D) Sr
The rate constant for the second order reaction 2NO2 ???&??; N2O4 is 2.79 L/mol •min at 48 oC. If the initial concentration of NO2 is 1.05 M , what is the half-life
What is the balanced chemical equation for the reaction used to calculate Delta H f of SrCO3(s) ? If fractional coefficients are required, enter them as a fraction
The combustion of ethene, C2H4 , occurs via the reaction C2H4 (g) + 3O2(g) ===> 2CO2(g) + 2H2O(g) with heat of formation values given by the following table
The value of the gas constant is 0.08206 L x atm/(mol x K). You may also find the conversion factors 1 atm = 760 torr and Tk = Tc + 273 useful.
Calorimetry is a method used to measure changes in enthalpy, or heat, that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant-volume (or "bomb")
Use the data below to answer the questions. Substance Delta HF kJ/mol) C(g) 718.4 CF_4(g) -679.9 CH_4(g) -74.8 H(g) 217.94 HF(g) -268.61 Keep in mind that the enthalpy of formation of an element in
The glycolytic reaction pathway from glucose to pyruvate is comprised of 10 different reactions. The overall reaction catalyzed by pyruvate dehydrogenase is a single reaction that connects glycolysi