PLZ HELP (SCIENCE) Match the following items. 1. a reaction that releases energy
decomposition
2. a reaction that takes in energy
endothermic
3. chemical change whereby a molecule breaks down into simpler molecules or elements
exothermic
4. written underneath or below
oxidation
5. a chemical change resulting from a reaction with oxygen
subscript

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

gas

explanation:

smoke is the matter of a gas

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them