Students are given the following data for determining the average atomic mass of lithium. A sample of lithium consists of 1000 atoms. 75 atoms are the isotope Lithium-6 (6.015 amu) and 925 are Lithium-7 (7.016 Amu). What is the average atomic mass of Lithium. *

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids