Convert 77.2 grams of CH4 to molecules.

Explanation:

77.2 grams of CH4

no of molecules=77.2/16=4.825 mol

no of molecules= 4.825 × 6.023 × 10²³

=29.060975 × 10²³

сфоткай отправь. я не магу зделать

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: