Which of the following best explains why you put KI and Pb(NO3)2 into two separate test tubes before mixing them? 1)to observe both solutions before the reaction
2)to predict the products
3)to make an accurate measurement of the amount of each solution
4)to make it easier to mix the solutions

(EDGE)

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:

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .