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Here is the link to a great video that explains your question nicely, hope this helps.
What are the sentences?
It would help to see the sentences.
Answer:
Examples of permineralization
Most dinosaur bones are permineralized. Petrified wood: Permineralization is the first step in petrification.
4.06x20^24/6.02x10^23 = 6.744 moles x 55.845 g/mole = 376.61868grams
