A mummy is discovered that has only one-fourth of its original carbon-14 remaining. How old is the mummy,
in years? Explain your reasoning.

A mummy is discovered that has only one-fourth of its original carbon-14 remaining. How old is the mummy in years is  Explained below

Explanation:

The original C14 content is represented by variable C. Think in terms of half-lives: after 1 half life, you’ve got half the original carbon-14 (0.5C). After another half-life, you’ll have half of what you started that half-life with (.25C). So a mummy with 1/4 of its original C-14 is 2 half-lives old. Different textbooks might calculate the C14 half-life a little differently depending on publication date, but the current standard is 5,730 years. So your mummy is 11,460 years old, +/- your error margin and depending on the calibrations your lab uses.After 1 half-life, 12 of the C-14 would remain. After 2 half-life, 12 of the 12 of the C-14 = 14 of the C-14 would remain. After 3 half-life, 12 of the 14 of the C-14 = 18 of the C-14 would remain.The half-life of a radioactive isotope describes the amount of time that it takes half of the isotope in a sample to decay. In the case of radiocarbon dating, the half-life of carbon 14 is 5,730 years.Radiocarbon dating involves determining the age of an ancient fossil or specimen by measuring its carbon-14 content. ... Green plants absorb the carbon dioxide, so the population of carbon-14 molecules is continually replenished until the plant dies. Carbon-14 is also passed onto the animals that eat those plants.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.