Astock solution of hno3 is prepared and found to contain 13.5 m of hno3. if 25.0 ml of the stock solution is diluted to a final volume of 0.500 l, the concentration of the diluted solution is m.

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: