B.SC GRADUATE
Molecular Orbital TheorySketch the bonding and antibonding molecular orbitals that result fromlinear combinations of the 2$p_{z}$ atomic orbitals in a homonuclear diatomicmolecule. (The 2$\beta_{z}$ orbitals are those whose lobes are oriented perpendicular to the bonding axis.) How do these molecular orbitals differ from those obtained from linear combinations of the 2$\beta_{y}$ atomic orbitals? (The2$p_{y}$ orbitals are also oriented perpendicular to the bonding axis, but alsoperpendicular to the 2$\beta_{z}$ orbitals.)
A coil has a resistance of 48.0$\Omega .$ At a frequency of 80.0 $\mathrm{Hz}$ the voltage across the coil leads the current in it by $52.3^{\circ} .$ Determine the inductance of the coil.
Ralph is always thirsty and recently learned that he synthesizes mutated antidiuretic hormone (ADH). Discuss why Ralph would be at higher risk for diabetes insipidus.a. $\mathrm{ADH}$ helps in the loss of water. Overproduction of ADH would cause improper functioning of kidneys.b. Underproduction of ADH inhibits the release of aldosterone that would cause improperfunctioning of kidneys.c. ADH helps retain water. Underproduction of ADH would cause improper functioning ofkidneys.d. ADH helps in retaining electrolytes. Underproduction of ADH causes improper functioning of kidneys.
Challenge An atom has a mass number of 55. Its number of neutrons is the sum of itsatomic number and five. How many protons, neutrons, and electrons does this atom have?What is the identity of this atom?
Copper sulfide is formed when copper and sulfur are heated together. In this reaction, 127 g of copper reacts with 41 g of sulfur. After the reaction is complete, 9 g of sulfur remains unreacted. What is the mass of copper sulfide formed?
Artificial Sweetener Determine the percent composition of aspartame $\left(\mathrm{C}_{14} \mathrm{H}_{18} \mathrm{N}_{2} \mathrm{O}_{5}\right),$ an artificial sweetener.
10. An 8.00 kg ball, hanging from the ceiling by a 135-cm-long massless wire, is struck in an elastic collision by a 2.00 kg ball moving horizontally at 5.00 m/s just before the collision. Find the tension in the wire just after the collision.
According to Faraday's law of induction, the magnitude of the induced emf in a circuit equals the absolute value of the time rate of change of the magnetic flux through the circuit. In this definition, which statement about the emf is true?
It is always equal to 1.
It is always positive.
It is always negative.
It is always equal to zero.
(problem 17.26) How much work must be done to bring three electrons from a great distance apart to 2.0×10^-10 m from one another (at the corners of an equilateral triangle)?
Two metal spheres each have a mass of 5.2 x 10^8 kg. If the gravitational force of attraction between them is 40.4 N, what is the distance between their centers of mass?
Record your answer to two digits after the decimal point.
If the correlation between the returns of A and B is 0.50, what is the standard deviation for the portfolio that includes 60% A and 40% B?
Oh no! You are a yeast cell that experiences a double-strand break during a part of your cell cycle after replication but before mitosis. What method of DNA repair, from those listed below, would be best to use and why?
A. Nucleotide excision repairB. Homologous recombination repair (SDSA or DSBR)C. Non-homologous end-joining (NHEJ)D. Bypass polymerase
Explanation:
