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Subject Matter Expert - Quality Check, Physical Chemistry in Delhi (Job Vacancy)

Chegg India

Delhi

Entry level

Not Disclosed

Full-time

1 Vacancies

200 Applicants|Posted 24 Day(s) ago


Job Description

Job Description

Subject Matter Expert - Quality Check, Physical Chemistry

Your goal – To holistically improve the education process and better the lives of students through immaculate content production.

The Culture

Chegg’s culture celebrates leadership at all levels and does not discriminate based on job descriptions or titles. The culture is open, with our “fast feedback” system implemented to encourage transparency. You will be given the latitude to drive and stretch to deliver mutual goals.

SME-Physical Chemistry is a vital source of knowledge, capability, or expertise in Chemical Engineering. The SME functions as the organizational representative for his/her knowledge area and applies his/her expertise to support the strategic direction of the organization. The expert is expected to display excellent command over CORE subject area to support academic content creation, audit, and analysis across Chegg content portfolio (Q&A/Textbook solutions/Videos/Flashcard etc.)

Responsibilities

  • Creation of academic content for students in a structured, understandable, and step-by-step manner.
  • Ensuring only high-quality content is delivered to students, through quality checks/fixing.
  • Providing solutions to complex problems of different academic levels (UG & above) with clarity.
  • Providing feedback and training to empower an expert community.
  • Evaluating and enhancing subject taxonomy for appropriate content categorization and improved searchability.
  • Categorizing content based on complexity and academic level.
  • Product and impact analysis to enhance overall student experience.

Requirements

  • M.Sc. Chemistry/ M.Sc. Chemistry (specialization in Physical Chemistry).
  • Freshers / Faculty (0- 3Years Experience) - anyone with strong subject knowledge can apply.
  • Strong Subject knowledge of Physical Chemistry / Strong knowledge of 1. Quantum Chemistry, 2. Chemical Bonding, 3. Symmetry and Group Theory, 4. Molecular Spectroscopy, 5. Photochemistry,
  • Thermodynamics, 7. Statistical Thermodynamics, 8. Solutions, 9. Solid state and surface chemistry, 10. Chemical equilibrium, 11. Gaseous state- Molecular dynamic, 12. Chemical kinetics,
  • Electrochemistry & 14. Nuclear Chemistry
  • Knowledge of software like ChemDraw and Serif Draw will be an added advantage.
  • Proficiency in English language and excellent verbal and written communication skill.
  • Must be well versed with computer-related applications.
  • Proficient in MS office and/or subject specific software/ tools.
  • Strong organizational, time-management, and interpersonal skills.
  • Willing to consistently learn and evolve in a fast-paced environment.
  • Willing to work in rotational shifts and week-offs as per business requirements.

SME-Physical Chemistry Quantum chemistry

Quantization of energy, wave-particle duality; blackbody radiation; the photoelectric effect; atomic spectra and the Bohr model of the hydrogen atom; Quantum mechanical waves and the Schrodinger equation; Solving the Schrodinger equation: operators, observables, eigenfunctions, and eigen values; the postulates of quantum mechanics; the expectation value; the particle in one-dimensional box; particle in two- and three- dimensional box; commutating and non-commutating operators; the Heisenberg uncertainty principle; the quantum mechanical harmonic oscillator; quantization of angular momentum; the hydrogen atom, formulating and solving the Schrodinger’s equation, eigen values and eigenfunctions of total energy; hydrogen atom orbitals, the radial probability distribution function

Chemical Bonding

Valence electrons, Stable electronic configurations, Lewis electron-dot symbols for atoms/ions, ionic bonds, octet rule, Lewis structure for ionic compounds, formulas and names of binary ionic compounds, electronegativity, covalent bonds, polar covalent bonds, determination of Lewis structures for polyatomic compounds/ions, the VSEPR theory, determination of molecular geometry.

Symmetry and group theory

Symmetry elements, symmetry operations, and point groups; Assigning point groups, Representations of symmetry operators, bases for representations, the character table, the great orthogonality theorem; symmetries of the normal modes of vibration of molecules.

Molecular spectroscopy

Pure rotational spectroscopy: the rigid diatomic molecule (rigid rotor); rotation of polyatomic molecules: linear molecules, spherical tops, symmetric tops, asymmetric top; the Stark effect; applications of microwave spectroscopy.

Vibrational spectroscopy of diatomic molecules: oscillations of systems with one degree of freedom, the diatomic molecule, the potential energy function for a chemical bond.

Vibrational spectroscopy of polyatomic molecules: rotation vibration spectra of polyatomic molecules, selection rules.

The Raman effect: classical treatment of Raman effect; quantum theory: rule of mutual exclusion, polarization of Raman lines, fermi resonance, influence of nuclear spin.

Electronic spectroscopy of diatomic molecules: The Born-Oppenheimer approximation; vibrational coarse structure; Frank-Condon principle; dissociation energy; electronic structure of diatomic molecules; electronic angular momentum in diatomic molecules; selection rules; rotational fine structure of electronic-vibrational transitions.

Electronic spectroscopy of polyatomic molecules: intensities of electronic transitions; types of electronic transitions; free electron model of linear polyenes; change of molecular shape on absorption.

Photochemistry

The Jablonski diagram; Beer-Lambert law; laws of photochemistry: Grotthus-Dapper law and Stark- Einstein law; Quantum yield; determination of quantum yield; photochemical reactions; kinetics of photochemical reactions; energy transfer in photochemical reactions: photosensitization and quenching; Quenching of fluorescence: The Stern-Volmer equation.

Thermodynamics

Thermodynamics and its importance; Internal energy and first law of thermodynamics; Heat; Work; State functions and path functions; reversible and irreversible processes; Heat capacity; Enthalpy; variation of enthalpy with temperature at constant pressure; variation of enthalpy with pressure at constant temperature; The Joule-Thomson experiment; Hess’s law; Entropy and the second law of thermodynamics; Spontaneity; Absolute entropies and the third law of thermodynamics; heat engines and Carnot cycle; Gibbs energy and Helmholtz energy; fugacity and equilibrium constant for real gases.

Statistical thermodynamics

Stirling’s approximation; probability distribution functions; microstates and configurations; Boltzmann distribution; Ensemble and molecular partition function; translational, rotation, vibrational and electronic partition function; the equipartition theorem; thermodynamic properties in terms of partition function; the Einstein solid; Residual entropy.

Solutions

Types of solutions; intermolecular forces in the solutions; concentration units: molarity, mole fraction, molality, percent by mass, percent by volume, part per million; factors affection the solubility: temperature and pressure; Henry’s law; Ideal and non-ideal solution; Raoult’s law; Colligative properties: vapor-pressure lowering, boiling-point elevation, freezing-point depression, osmotic pressure, electrolyte solutions, Van’t Hoff factor; calculations using colligative properties; colloids.

Solid state and surface chemistry

Properties of solids; types of solids: amorphous and crystalline solids; types of crystalline solids: ionic crystals, covalent crystals, molecular crystals, metallic crystals; symmetry in crystal systems; Bravais lattices; Miller indices; interplanar spacing in a crystal system, X-ray diffraction, point defects.

Surface chemistry: Adsorption, chemisorption, applications of adsorption; adsorption of gases by solids; factors influencing adsorption; the Freundlich-adsorption isotherm; the Langmuir theory of adsorption; the BET theory of multilayer adsorption; types of adsorption isotherm; adsorption from solution: the Gibb’s adsorption isotherm.

Chemical equilibrium

The concept of equilibrium; the equilibrium constant: calculating equilibrium constant, magnitude of equilibrium constant; equilibrium expressions: heterogeneous equilibria, gaseous equilibria; chemical equilibrium and Gibb’s free energy; calculating equilibrium concentrations; Le-Chatelier’s principle: factors affecting equilibrium, addition/removal of a substance, change in volume and pressure, change in temperature, change in volume, catalysis.

Gaseous state- Molecular dynamic

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