How many moles of magnesium is 1.25
x 1023 atoms of magnesium?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules