Chemistry

Chemistry Section 5 According to Gay-Lussac’s law, when gases react, they do so in simple whole-number ratios by volume. The normal boiling point is the temperature at which the vapor pressure of a liquid equals 1 atm. For a given mass of gas at constant temperature, its volume is inversely proportional to pressure. The SI […]

Chemistry Section 4 The quantum number indicating electron energy is ‘n’. Neutrons can expel protons from paraffins. Attractive forces balance centrifugal forces in atoms. When the 6d orbital is complete, the next electron enters the 7p orbital. Neutrons moving with 1.2 MeV energy are considered fast neutrons. Chromatography classification is based on shape, phase, and

Chemistry Section 3 Pumping water uphill is a non-spontaneous process. A state function can include pressure, temperature, and enthalpy. Enthalpy of a reaction can be measured using a glass calorimeter. Thermodynamic parameters are state functions. Energy transfer occurs through heat and work. Enthalpy change can be calculated using Hess’s law or measured by a calorimeter.

Chemistry Section 2 The unit of the rate constant (k) for a zero order reaction is the same as that of the rate of reaction. Acid rain may contain both H2SO4 and HNO3. Sodium is an element that conducts electricity and melts below 100°C. Ethylene bromide is added to leaded gasoline to prevent engine deposits.

Chemistry Section 1 The soul of chemistry deals with the composition and properties of matter. The radioactive isotope of hydrogen is tritium. The electron was discovered by J.J Thomson. Sodium carbonate is produced by the Amonia solvay process. Graphite is a substance. Metallic substances are generally good conductors of electricity in both solid and liquid