If you have a sample of a radioactive isotope that has a half-life of one day, how much of the original sample is left at the end of one
day?

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

Which type of fossil does this image depict?

When a scientific theory has been tested and proved by the scientific community, it becomes a law