HELP PLEASE I LOVE YOU THANK YOU Question 5 of 10
Which of the following reactions shows a chemical change producing a gas?
A. NaCl(s) + NaCl(aq)
B. H2(g) + O2(g) → H2O(1)
O C. 2CH3OH() + 302(g) → 2C02(g) + 4H20(1)
O D. 2AgNO3(aq) + Cabr2(aq) + 2AgBr(s) + Ca(NO3)2(aq)

Explanation:

4

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:

explanation: no but i do not usually comment