In examples where the volume of a system is under constant pressure, which of the following quantities equals enthalpy change?
A) work done by the system
B) temperature change
C) internal energy change
D) heat absorbed or released by the system

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он

How many atoms are there in 5.70 mol of mg

Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.