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:
an uplift-weathering hypothesis is a “proposal that chemical weathering is an active driver of climate change, rather than just a negative feedback that moderates climate". uplift-weathering hypothesis both discuss how chemical weathering is a negative feedback that moderates climate; however, the uplift hypothesis tries to say that chemical weathering is the active driver for climate change and not just a negative feedback
Explanation:
The threat of failure for my future
I'd say D. expert power because expert power is when an employee ( or in your case the teacher) has a high set of knowledge/skills that other employees do not posses. Which by the information above about this teacher's PhD and thier experience, I assume that this teacher must have expert power.
