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The reaction in which more reactive element replace a less reactive element from its compound is called displacement reaction.
Ex:-
Chemicals cancel each other out and produce a salt and water. A neutralization reaction my also occur
The number of half -lives that has passed after 105 hours for krypton-79 that has half-life of 35 hours is calculated as below
if 1 half life = 35 hours
what about 105 hours = ? half-lives
= (1 half life x105 hours) /35 hours = 3 half-lives has passed after 105 hours
In a chemical equation, a subscript tells one how many atoms or molecules of a reactant or a product take part in a reaction.
Answer: varriable
Explanation:meaning one element, feature or factor able to change
