The making of a scientist |part 2

What are the qualities that go into the making of a scientist?

The Making Of A Scientist Detailed Explanation Part I

The Making Of A Scientist Detailed Explanation Part Ii

In 1928 , a scientist an antibiotic which was found to be very effective. The name of the scientist and the antibiotic respectively are:

A certain number is divided into two parts such that 5 times the firsts part added to 11 times the second part makes 7 times the whole. The ratio of the first part to the second part is