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Confucianism is a philosophy more than a religion and emphasizes respect and obedience of children to their parents, adults to society, and citizens to their government. Reflect upon the sixteen Confu
A sample of natural gas at STP is 78% CH4 and 22% C2H6 by volume. How many moles of each gas are present in 2.00 L of the mixture. Assume Ideal gas behavior.
Two small spheres, each with mass m = 3.1 g and charge q, are suspended from a point by threads of length L = 0.23 m
Write a mechanism for the reaction of an alkyl halide with alcoholic silver nitrate which depicts the type of substitution which occurs. Explains how this mechanism accounts for the relative rate of
Describe the different ways that people have sought to understand their origins, from the origin or creation myths to the work of natural scientists such as Charles Darwin, the Leakeys, DuBois, Dart,
A test charge of +2*10^-7 C is located 5cm to the right of a charge +1*10^-6 C and 10 cm to the left of a charge -1*10^-6 C. The three charges lie on a straight line
Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion
Why did neolithic peoples form permanent settled communities? What were the advantages and disadvantages of those communities?
Explain the difference between Stone Age (Paleolithic) and New Stone Age (Neolithic) life. How did the "new technology" affect human development?
In Complex III, electrons are transferred between ubiquinone and cytochrome c. Standard reduction potentials are, write a balanced equation for this reaction and calculate the overall cell potential a
In the Bohr theory of the hydrogen atom, an electron moves with constant speed in a circular orbit about a proton, where the radius of the orbit is 0.53 x 10-10 m, Determine the electrostatic force
What factors led to the collapse of communism? What were some of the positive aspects of the collapse of communism? What were some of the negative aspects of the collapse of communism?
Using a table of thermodynamic data calculate, the Delta H degrees for the following reaction (at 25 degrees C).
If the water in a well has 1000.0 mg/L of CaCO3 dissolved in it, How many grams of Na2C2O4 could you mix with 100.0 mL of that water before a precipitate would form
In the synthesis of benzoic acid rom CO2 and the phenylmagnesium bromide, benzene is often detected as a impurity, how does this come about
If the final tempurature of the combined water is 42.0 degrees C and the heat capacity of the calorimeter is 26.3 J/degrees C , calculate the mass of the water originally in the calorimeter
The standard free energy of the reaction represents the drive the reaction has under standard conditions to move toward equilibrium. Express the equilibrium constant numerically using three significa
The solutions start out at 22.50 deg C, and the final temperature after reaction is 24.28 deg C. The densities of the solutions are all 1.00 g/mL, and the specific heat of the mixture is 4.2 J/g deg
Find the total capacity, total charge and the voltage across C1 and C2 given C1= 15nF and C2= 25nF are connected in parallel across a 200 volt supply
a student is asked to calculate the amount of heat involved in changing 10 grams of liquid bromine at room temperature (22.5 C) to vapor at 59 C. To do this, one must use tables 8.1 and 8.2 for info
spontaneous at high temperature or spontaneous at low temperature. (a) The temperature of a sample of Co(s) is lowered from 60°C to 25°C. (b) Ethyl alcohol evaporates from a beaker.
Suppose that a fully charged lead-acid battery contains 1.50L of 5.00M H2SO4. What will be the concentration of H2SO4 in the battery after 2.30A of current is drawn from the battery for 9.50 hours?
The bond dissociation energy of Br2(g) is 193 kJ/mol, and the electron affinity of bromine is -325 kJ/mol. The enthalpy of vaporization of Br2 (l) is 31 kJ/mol. The lattice energy of KBr is -682 kJ/
hree identical small Styrofoam balls (m = 1.81g) are suspended from a fixed point by three nonconducting threads, What is the common charge q carried by each ball
Carbon monoxide (g) reacts with oxygen (g) to form carbon dioxide (g). In a 1.00 L flask, 2.40 atm of CO reacts with 4.50 atm of O2. Assuming that the temperature remains constant, what is the final