Sample of radioactive element is it half-life of 3.0 days. It's 2.0 kg of the same several remains unchanged after 9.0 days, what was the initial mass of the sample question

Which event had the greatest impact on culture of south america

Which event most likely explains renewed demand in a recovery period? consumers choose to save more and spend less. economic policy renews consumer confidence and demand. producers decrease prices to prompt demand and recovery. production decreases to prompt increased demand.

What does the map above tell us about the endemity of typhoid fever