Lithium-6 has a mass of 6.0151 amu and lithium-7 has a mass of 7.0160 amu. the relative abundance of li-6 is 7.42% and the relative abundance of li-7 is 92.58%. based on this data alone, calculate the average atomic mass for lithium to the correct number of significant digits.

The average atomic mass of Lithium is 6.94 amu.

Explanation:

Mass of isotope Li-6 = 6.0151 amu

% abundance of isotope  Li-6 = 7.42%=

Mass of isotope Li-7=  7.0160

% abundance of isotope Li-7 = 92.58% =

Formula used for average atomic mass of an element :

Therefore, the average atomic mass of Lithium is 6.94 amu.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.