The initial mass of a radioisotope is 10. 0 g. If the radioisotope has a half-life of 2. 75 years, how much remains after four half-lives?.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

fdvwsa gfwsargebgeebbfwfwffw gwf   vgwgw gw f gwgw fgw v v dsv dwfff

the answer is 303.15 or 303