Which values describe standard temperature and pressure (STP)?
•
A.
0°C and 101.3 atm
OB.
100°C and 101.3 atm
OC. 273.15 K and 1 kPa
D. 273,15 K and 101.3 kPa

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

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: