During a reaction, the enthalpy of formation of an intermediate is -286 kJ/mol. During the reaction, 2 moles of the intermediate are produced. What
is the enthalpy value for this step of the reaction?
A:286 kJ
B:-286 kJ
C:-572 kJ
D:572 kJ

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.