Answer:Discuss experiments that led to discovery of the electron and the nucleus ... These particles had a similar mass as protons, but did not have the same ... The atomic nucleus contains a mix of positively charged protons and ... Intro to the History of Atomic Theory – Intro: Rutherford, Thomson, electrons, nuclei, and plums.
Explanation:
Answer: 4.04 ounce
Explanation: Given: Peanut butter contained in the jar = 1.43 kg
Used Peanut butter=8.0 % of 1.43kg = 
As we know 
