How was the plum pudding model different from models that came after it

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

What is the percentage of hydrogen in c2h4