To obtain monochloroethane from ethylene, chlorine gas (Cl2) must be added. The reaction between ethylene and chlorine gas results in the substitution of one hydrogen atom in ethylene with a chlorine atom, forming monochloroethane. This reaction is known as chlorination and is commonly used in the production of various chloroalkanes. **

Monochloroethane cannot be formed in any of the reactions because it requires the substitution of two hydrogen atoms in ethane with chlorine atoms. The reactions provided only involve the addition of one chlorine atom to the ethane molecule, resulting in the formation of chloroethane. To form monochloroethane, a different reaction mechanism, such as free radical chlorination, would be needed to replace both hydrogen atoms with chlorine atoms. **

Monochloroethane cannot be formed in any of the reactions because it is a primary halogenoalkane, meaning that the carbon atom bonded to the halogen is only attached to one other carbon atom. In the reactions provided, the starting materials are either ethene or ethanol, both of which do not have a primary carbon atom bonded to the halogen. Therefore, monochloroethane cannot be formed as a product in these reactions. **

The correct form is "in voller Bereitschaft." This phrase is used to convey being fully prepared or ready for something. The preposition "in" is used to indicate the state or condition of being fully prepared, while "voller" is an adjective meaning "full" or "complete." Therefore, the phrase "in voller Bereitschaft" is the appropriate form to convey being in a state of full readiness. **

The correct form is "in voller Bereitschaft." This phrase is used to indicate being fully prepared or ready for something. The preposition "in" is necessary to show that something or someone is in a state of readiness. **

Responsiveness 2 is the ability to react quickly and effectively to changes in a situation or environment. It involves being flexible, adaptive, and proactive in addressing new challenges or opportunities. By being responsive, individuals or organizations can better meet the needs of their stakeholders and stay ahead of the competition. **

Biological preparedness is the concept that humans and animals are inherently predisposed to learn and retain certain types of information more easily than others due to evolutionary factors. This means that we are more likely to develop fears or associations with stimuli that have been historically relevant to our survival, such as snakes or spiders. This preparedness is thought to be the result of natural selection favoring individuals who were quick to learn and respond to potential threats in their environment. Overall, biological preparedness helps explain why certain phobias or fears are more common and easier to acquire than others. **

Emergency preparedness refers to the actions and measures taken to effectively respond to and mitigate the impact of potential emergencies or disasters. This includes having a plan in place, being aware of potential risks, and having the necessary resources and training to respond to various types of emergencies such as natural disasters, accidents, or public health crises. It also involves being proactive in preventing emergencies and being ready to act quickly and efficiently when they do occur. Overall, emergency preparedness aims to minimize the impact of emergencies on individuals, communities, and infrastructure. **