What mass of NH3 can be made from 1221g of H2 and excess N2

The mass of NH3 which can be made from 1221g of H2 and excess N2 is 6867g NH3

Explanation:

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: