Holding items in the freezer for too long is not an example of abuse of time and temperature.
<h3>
What is abuse of time and temperature?</h3>
Abuse of time and temperature has to do with a situation in which time is used in an improper way or food is not held at the correct temperature ultimately leading to food poisoning.
Holding items in the freezer for too long is not an example of abuse of time and temperature.
Learn more about temperature: brainly.com/question/7510619
A reaction is exothermic if Δ<em>H</em> (or
in some textbooks) is negative:
- H₂ + Br → 2 HBr, ΔH < 0.
- CH₄ + 2 O₂ → CO₂ + 2 H₂O, ΔH < 0.
A reaction is endothermic if Δ<em>H</em> is positive:
- 2 NH₃ → N₂ + 3 H₂, ΔH > 0.
- 2 HCl → H₂ + Cl₂ ΔH > 0.
<h3>Explanation</h3>
The enthalpy of a system is the sum of its internal energy. ΔH < 0 indicates that the reactants lose internal energy in the reaction. Energy conserves, and those internal energies must have converted to some other form of energy. They typically end up as thermal energy. The reaction will release heat since it is exothermic.
Similarly, ΔH > 0 indicates that the reactants gains internal energy in the reaction. Energy conserves. As a result, the reaction must have gained energy from its surroundings. The reaction will be endothermic since it absorbs heat.
D.There were large food shortages.
As a result of people being able to trade and purchase food from other people.
Explanation:
- From the following options, The people who were able to trad and purchase food from other people could be because of large food shortages.
- People started buying from each other to fulfill their basic food necessities.
- There is also a possibility where people have more stock to be sold.