CHEM0010

CHEM0010 - ALL CONTENT EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE GRADED A++ Explain how a mass spectrometer works. Sample is vaporised with heat. Electron beam ionises sample. Ion beam accelerated by electric field (so KE is constant). Magnetic field deflects particles according to mass/charge ratio. Lower m/z are deflected more; reach ion detector faster. What is the Aufbau principle? lowest energy orbitals are filled first. Describe the properties o...

CHEM0010 WEEK4 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE vibrational modes vibration patterns in complex molecules Frequency of vibration depends on mass of two atoms and bond strength bond vibration correspond to which section of electromagnetic spectrum? Infrared (IR) 2 formulas for finding number of possible vibration modes 3N-6 where N is greater than 2 3N-5 where N is describing a group of linear molecules fingerprint region In an IR spectrum, th...

WEEK5 CHEM0010 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Energy Capacity to do work 1st law of thermodynamics Energy cannot be created or destroyed specific heat capacity the energy required to raise the temperature of one gram of a substance by one degree Celsius latent heat the energy absorbed or released during a change in state metabolic rate the rate at which the body uses energy Kleiber's Law As log of organism mass increases, log of metabol...

CHEM0010 - STRUCTURE EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Mass, charge and spin of electron. Mass = 0 Charge = -1 Spin = 1/2 Mass, charge and spin of proton. Mass = 1 Charge = +1 Spin = 1/2 Mass, charge and spin of neutron. Mass = 1 Charge = 0 Spin = 1/2 What is an isotope? Elements with the same number of protons but different number of neutrons. 5 steps of mass spectrometer. 1. Sample vapourised. 2. Electron beam ionises sam...

CHEM0010 - THERMODYNAMICS EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE How to calculate energy from the sun. E = hv. E is energy. h is Planck's constant. v is frequency. What is the first law of thermodynamics? Energy cannot be created nor destroyed. What is the equation which calculates work done stretching a spring? W=1/2 k x^2. W is work done stretching spring. k is force constant. x is distance stretched. What is the equation for work done? ...

CHEM0010 - SPECTROSCOPY EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE How is the refractive index calculated? n = c / v n is the refractive index. c is the speed of light. v is the speed of light in the substance. What is the speed of light in a vacuum? 3 x 10^8 m/s. What is the equation for the speed of light? c = λν c is speed of light. λ is wavelength. v is frequency. Why is light separated into separate colours when passing through a prism? ...

CHEM0010 - IONS EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS LATEST UPDATE How are E and ΔG related in an equation? ΔG = - n x F x E. n is moles of electrons. F is Faraday's constant. E is Ecell. What powers processes in a cell? ATP hydrolysis. What does thermodynamics describe? The changes in the form of energy when a reaction occurs. E.g. converting chemical energy to heat. What does kinetics describe? How quickly or slowly a reaction or equilibrium occurs. What d...

CHEM0010 - KINETICS EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE What is the rate equation? Rate = k x [A]^m x [B]^n. What is the overall order of a reaction? Sum of the individual orders. m+n. Give the integral of a zero-order rate reaction. [A] = [A]o - kt. [A] is concentration of A. [A]o is original concentration of A. k is the rate constant. What is an example of a zero order reaction in the body? Elimination of alcohol from the bloodstream is z...

CHEM0010 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Which of the following concepts are required to determine the ground state electronic configuration of the nitrogen atom? Select one or more: A) The de Brogile reaction B) Hund's Rule C) Pauli Exclusion Principle D) Aufbau Principle E) Schrodinger Equation B) Hund's rule and C) Pauli Exclusion Principle and D) Aufbau Principle - Hund's rule determines how you fill the orbitals when some...

CHEM0010 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE What is the spin of each subatomic particle in an atom? 1/2. Describe how a mass spectrometer works. The sample is vaporised and ionised as sprayed into the TOF tube where an electric field accelerates the ions by the same kinetic energy and a magnetic field then deflects the particles according to their mass/charge ratio thus meaning that the smaller particles with lower molecular mass reach the end plate d...