Mixtures cannot be separated by physical means how is a pure substance different from a mixture how is a pure substance different from a mixture the pure substance different from a mixture

There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

Look at the bean data from days 4–6. use these data to explain how natural selection changed the number of dark red walking beans over time. writing part

Describe the interaction that occurs between two objects with the same electrical charge.