Discard the water layer, which contains the aspirin or acetominophen) and evaporate the chloroform layer to dryness under gentle heat. The result is codeine base, a white crystalline powder. Combine 20 mL pyridine and 25 mL conc. HCl in a beaker and heat strongly to 190C to drive off any water.
A simple sentence usually consists of a single finite clause with a finite verb that is independent. More complex sentences may contain multiple clauses. Main clauses (i.e. matrix clauses, independent clauses) are those that can stand alone as a sentence. Subordinate clauses (i.e. embedded clauses, dependent clauses) are those that would be awkward or incomplete alone.
Examples and Observations. 1  A clause is a group of words that [contains] a subject and a verb. 2  There are two major types: independent clauses and dependent clauses. 3  An independent clause can stand alone as a sentence, beginning with a capital letter and ending with terminal punctuation such as a period.n independent clause (unlike a dependent clause) can stand alone as a sentence. An independent clause is also known as a main clause or a superordinate clause. Two or more independent clauses can be joined with a coordinating conjunction (such as and) to form a compound sentence. Exercises.