What causes the Moon to revolve around Earth? A. Earth's Gravity
B. The sun's Gravity
C. The Moon's lack of Gravity

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

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

State one important difference between a physical change and a chemical change?