If the half-life is 5 minutes, then 30 minutes is equivalent to 6 half-lives. So, after six successive half-lives, the 400 mg of the radioisotope would have a mass of 400(0.5)⁶ = 6.25 mg.
Thus, A would be the correct answer choice here.
Answer:The rightsof the population were taken in favor of the colonizers
Explanation:
Most of the southerners believe that slaves are essential for southern trades.
Even though small number of them did not think similarly, majority of The southerners view that the government should not intervene with the issue regarding slavery in the south.
Southern economy was supported mostly by agricultural sectors and they require large number of labor. They argue that freeing the slave would massively increase the cost and reduce states' income.
<em>Answer: D</em>
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<em>Explanation: The answer is D because, when you are turning the pedestrians are going to be walking towards the other side so, this means you have to stay alert for the citizens.</em>
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