Sand dunes are large piles of of sand that can be found in the dessert. What causes these sand dunes to form A. Ice
B. Wind
C. Earthquakes
D. Volcanoes

Why do sodium and neon have vastly different chemical and physical properties despite having similar atomic masses?

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

What material does not melt at any temperature