) What is a centroid in mass spectrometry? How is it calculated?        b) How does a monoisotopic molecular mass differ from an aver

152 A 352.44 Your Answer: 155 T 362.31 Answer 153 units Gö G D 355.67 156 X 154 365.88 359.12 157 You time travel 100 years into the future and learn that several new elements have been discovered, as pictured. These elements are frequently found as oxides, and need to be separated in order to extract the pure element. Before going through this effort, it is useful to know what amount of the element can be extracted. How many moles of element A can be extracted from 175 grams of A5012? N 369.52

(1) are composed of only one type of atom and we form (2) when we combine two or more of it. These atoms combine and stick to each other because of (3). Two or more (4). that are not chemically combined make up a (5) Its composition could be uniform as (6) which is also known as (7) and can also be non-uniform, which are called (8) These can further be classified into either (9) or (10). The characteristics that matter exhibit is better known as its (11)_ (12) are characteristics that could only be observed with a change in the molecular composition while (13). are the ones that doesn't require it. Furthermore, characteristics that change when the mass changes are called (14)_ while characteristics that are independent from these changes are called (15)

2. Chapter: 1 Lesson: 1 Question: If a nucleus were the size of the eraser on the end of a pencil (diameter = 0.125 in) what is the diameter of with a nucleus this size? (Give your answer in feet.) Hint: What is the ratio of the atom diameter to the diameter of the nucleus? (See Figure F01-1-1) See this sample problem if you need help.

Examples of Mass Spectrometry with respect to food

4a. Give the symbol for an isotope of carbon that has 7 neutrons. b. What isotope/atom has 5 valence electrons and 7 neutrons? Explain your reasoning! c. How many protons and neutrons does U-235 have? Show your work!