    ‘Sentence | 2: Who. was  influential in __ promoting  the: use... of. ‘chemical  compounds as. medicines?    Sentence 2: Living in ‘the  10th century, he. wrote.  The foundations | of ‘the  true". properties of  Remedies, amongst.’ others  ‘describing © J arsenious  oxiae, and. |)” being  ‘acquainted with ». silicic.  acid, . 7