Answer:
The total mass of materials present after a chemical reaction is the same as the total mass before the reaction
Explanation:
The Mass Conservation Act or the Conservation Matter Act proposed by Lavoisier postulates that: "The sum of the masses of the reactant substances is equal to the sum of the masses of the reaction products."
To reach these conclusions, Lavoisier used precise scales involving various elements in sealed containers. The total masses of the elements did not vary before (reactants) and after the reaction (products), remaining constant. Note that if he performed his experiments in an open environment there would be a loss of mass as the substance would react with air.
In this case, if we look at an iron that over time reacts with air (resulting in rust), we notice the variation in its initial mass. That is, it becomes larger after contact between them as it has the mass of iron and the mass of air.
Thus, we can state that the law of conservation of mass states states that the total mass of materials present after a chemical reaction is the same as the total mass before the reaction.
Answer: Option B -- The lack of social conflicts
Explanation:
Copycat crime is defined as one of the criminal acts, that's imitated by the previous crime committed. Copycat effect started in 1916 when a crime was imitated or modeled by Jack the Ripper. It was affected by the level of media distribution of the criminogenic content and by social context factors, which include:
(i) Social norms regarding deviance and violence
(Ii) The number of opportunities available to the potential offender to copy a crime technique
(iii) The nature, credibility, and pervasiveness of the mass media
Answer:
c
Explanation:
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Answer:
Broken Windows: The Police and Neighborhood Safety (George L. Kelling and James Q. Wilson, Atlantic Monthly) was first described in 1982 in a seminal article. The model focuses on the importance of disorder which refers to broken windows, in generating serious crime. Disorder is not described as the main linked to crime, instead, disorder leads to increased fear and withdrawal from residents, which then allows more serious crime to move in because of the loss of control of informal social activities.
Police play a key role as it can help reduce fear and disorder. Since they focus on crime and not on disorder, the crime rate does not decrease.
Explanation:
