Calculate the average atomic mass of carbon if 98.90% of the atoms are c-12 (12. amu) and 1.100% are c-13 atoms (13.003354 amu).

12.011036894

Average atomic mass of carbon =(0.989⋅12)+(0.011⋅13.003354)=12.011036894

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.