1. A radioisotope has a half-life of 1 hour. If a sample initially contains 100mg of this isotope, which one of the following correctly gives the amount of the radioisotope
remaining after 2 hours have passed? (1 point)

What are the seven economic and social goals?

Which of these is not a nucleotide base found in dna?

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.