Recycling!! And also planting more trees.
Hope this helps!
The total number of atoms remains unchanged, <em>always.</em> But the chemical properties change :)
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A.)49.4974874 moles or 49.5 moles
B.)2.980808730172671e+25 or 3e+25
No they can't because the definition of an element is, something that exists as a single atom
For example, oxygen is an element and can't be broken down anymore however, it can be combined with hydrogen to make water