How many grams of iron metal do you expect
to be produced when 215 grams of a 65.0
percent by mass iron (II) nitrate solution reacts
with excess aluminum metal?
2A1 + 3Fe(NO3)2(aq) — 3Fe + 2Al(NO3)2(aq)

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:

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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you need to stop taking that class