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Insert a stick in each hole of a model carbon atom and mentally draw imaginary lines between the ends of the sticks.
1. What geometric figure is represented by these imaginary lines?
2. What is the approximate angle between all possible pairs of covalent bonds in the model?
3. How many symmetry planes does the carbon atom model have?
4. Use an arrow to show the location of one such threefold axis in a figure of the carbon atom model
5. How many threefold rotation axes does the model have?
6. The carbon atom model has an additional rotational axis of symmetry that is NOT threefold. Use an arrow to show the location of one of these in a figure of the carbon atom model.
7. How many-fold is the axis you drew in (6)
Carbon monixide reacts with steam to produce carbon dioxide and hydrogen. At 700 k the equilibrium constant is 5.10. calculate the equilibrium concentrations of all species if 1.000 mol of each component is mixed in a 1.000-L flask.
How can their efficiency be less than 100% and the Law of Conservation of Energy still be valid? An incandescent light bulb functions because of the flow of electric current. Does the incandescent light bulb convert all of the electrical energy to..
For three known solutions and an unknown solution of a compound in water: Which one of the following values is possible as the molarity of the unknown
For the reaction:2CH4(g) C2H2(g) + 3H2(g) 0.115 mole of CH4 was placed in a 1.00 L container. At equilibrium it was found that the [C2H2] = 0.035 M. What is the value of the equilibrium constant?
Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0399 M phenol--a dilute solution.
Consider the reaction: C2H5OH (l) + 3O2 (g) --> 2 CO2 (g) + 3 H2O (l) , ?H= -1.37 x 103 kJ When a 24.8-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is burned, how much energy is released as heat?
Natural lithium is 92.58% lithium-7, with atomic weight 7.016, and 7.42% lithium-6, with atomic weight 6.015. What is the observed atomic weight of lithium as it occurs in nature?
If the vapor pressure of pure water at 25 C is 23.8mmHg What is the partial pressure of water over the solution? Assume ideal behavior for the solution.
Identify the intermolecular forces present in each of these substances. HCl, He, CO, HF Match these to the correct groups below. Dipole-dipole and dispersion only, Dispersion only
A solution is prepared by mixing 75.0 mL of 5.00 M HCl and 20.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution.
Nitrogen oxides undergo many interesting reactions in the environment and in industry. Given the following information, calculate H for the overall equation
Among all single bonds, only those involving hydrogen have signals in the functional group region of an infrared spectrum. What is the main reason behind this phenomenon?
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