When numbers are very small or very large, it is convenient to either express the value in scientific notation and/or by using a prefix with the unit. a pain-relieving pill has a mass of 0.005 g. express the pill’s mass in grams using scientific notation or in milligrams. express your answer in scientific notation to one significant figure or use a prefix on the unit.

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.

Because the dept in the ocean