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Answer:
Q3) Activity, in radioactive-decay processes, the number of disintegrations per second, or the number of unstable atomic nuclei that decay per second in a given sample
Q4)a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Q5) The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres (9.46 x 10¹²
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Answer:
3ans: In chemical thermodynamics, activity is a measure of the effective concentration of spices in a mixture in the sense that the spices chemical potential depends on the activity of real solution in the same way that is would depend on concentration for your ideal solution
4ans: molecule a group of two or more atoms that from the smallest identifiable unit into which a pure substance can be divided and still retained that composition and chemical properties of the substance........
5ans: 1light year =9.461×10^15 meters
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