In need of a numbered, styrofoam cup calorimetry laboratory procedure. This experiment will utilize redox chemical process.
Basic materials include:
3M HCL, H2SO4, C2H4O2, NAOH, NH4Cl
Mg, Al, Zn, Fe, Cu
RESONANCE STRUCTURES how do you know which elements has positve charge or negative
A .435 g sample of a nonvolatile, nonionizable solute with a molar mass of 67.4 g/mol is dissolved in 15.1 g of cyclohexane. Calculate the molar concentration of solute in the solution.
Calculate the boiling point of the solution described.
Calculate the freezing point of the solution described.
There is a large difference between Ionization potentials of Oxygen and Nitrogen, whereas the Ionization potentials of Phosphorous and Sulfur are very Close - Explain.
Identify the charge on the transition metal center and the number of valence d electrons it has.
How many grams of an acid, HA (FW 90.04, Ka=5.60x10-2) should be mixed with 5.00 g of its conjugate base, A- (FW 176.22) to give a pH of 1.10 when diluted to 200 mL?
A sample of a compound containing boron (B) and hydrogen (H) contains 1.152 g of B and 0.3222 g of H. The molar mass of the compound is about 30 g. What is its molecular formula?
Which of the following elements is a brittle solid and poor conductor of heat and electricity?
Why does an exergonic reaction mean that the products have lower free energy than the reactants, rather than the other way around, where the reactants have lower free energy than the products? Because doesn't an exergonic reaction mean that deltaG is negative?
A website promoting the use of alternative energy vehicles and hybrid technologies claims that, \"A typical automobile in the USA uses about 500 gallons of gasoline every year, producing about 5 tons of carbon dioxide.\" To determine the truth of this statement, calculate how many tons of carbon dioxide are produced when 500.0 gallons of gasoline are combusted. Assume that the primary ingredient in gasoline is octane, C8H18(l), which has a density of 0.703 g·mL^ –1
Generate a balanced chemical equation for the combustion of octane. The reactants will be C8H18+ O2, and the products will be CO2+ H2O. Using the mole ratios from the balanced equation, perform the correct unit conversions to arrive in tons of carbon dioxide. Note that : 1 gallon = 3785.4 cm3 1 lb = 453.6 g
A voltaic cell employs the following redox reaction:
Calculate the cell potential at 25 ∘C under each of the following conditions.
A) Standard condition
B) [Sn2+]= 1.64×10−2 M ; [Mn2+]= 2.25 M
C) [Sn2+]= 2.25 M ; [Mn2+]= 1.64×10−2 M
An empty 5.00-L flask is charged with 0.250 g of pure H2S(g), at 25 ∘C.
What is the initial pressure of H2S(g) in the flask? 3.59*10^-2 atm
In addition to the H2S already present in the flask, solid NH4HS is added until there is excess unreacted solid remaining.
a) What are the partial pressures of NH3 and H2S at equilibrium, that is, what are the values of PNH3 and PH2S, respectively?
b)What is the mole fraction, χ, of H2S in the gas mixture at equilibrium?
c)What is the minimum mass of NH4HS that must be added to the 5.00-Lflask when charged with the 0.250 g of pure H2S(g), at 25 ∘C to achieve equilibrium? Express your answer numerically in grams.