The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?

A. 25 g

B. 100 g

C. 75 g

D. 50 g

In a basketball defensive stance you stand up straight with your arms to your sides. A) True B) False

How might cancer of the testes affect a man ability to make sperm

Emotional abuse is less harmful than physical abuse. a. True b. False

Which geologic feature would most likely be represented by contour lines drawn far apart from one another? A hill, a cliff, a plain, or a valley

What are the difference between convergent, divergent, and transform?

Why is copper a pure substance

Over the course of a martian year, what are the ranges of the rms speeds of the co2 molecules.

Why is it important that all scientists use the metric system?.

Whay is moon non-lominous body

How many (whole number of) 91 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton? A metric ton is 1.000 * 103 kg. Answer in units of people.