Determine the enthalpy change of the following reaction: CH4 + 4Cl2 -> CCl4 + 4HCI Given enthalpies:
CH4: -17.9 kJ/mol
Cl2: 0 kJ/mol
CCIA: -95.98 kJ/mol
HCI: -92.3 kJ/mol

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.