Need help answering questions 2, 9, and 17. Your help is greatlyappreciated!
Need Help Answering Questions 2 9 And 17 Your Help Is Greatly Appreciated 1 (192 KiB) Viewed 17 times
9. (5 pts.) Plutonium-239 was used in the atom bomb that was dropped on Nagasaki, Japan in 1945. The mass of protons, neutrons, and electrons are: 1.661 x 1027 Kg, 1.662 x 10-27 Kg. and 9.11 x 10-31 Kg, respectively. The wt% of protons in 234Pu 234 Pu (a) 0.0216 wt% (b) 60.67 wt% (c) 48.26 wt% (d) 39.31 wt% atom is: - ford to contain only tus isotones I The
(a) 3.19 x 10 2. (5 pts.) A chemist was preparing a sample of vanadium (III) sulfide by mixing 138.5 grams of vanadium with an excess of sulfur. The chemical equation for the process is: 2 V (s) + 3 S (s) → V₂S3 (s) He obtained 200.5 grams of V₂S3 for his experimental yield. What is the percent yield for this reaction? (a) 55.05 % (b) 74.45 % (c) 87.23% (d) 76.69 % 20 40
(a) 43.35 g/mole (b) 50.75 g mole 17. (5 pts.) The reaction between elemental iron and oxygen to form iron (III) oxide 4 Fe (s) +3 0₂ (g) → 2 Fe₂O; (s) occurs as follows: The mass of Fe needed to produce 783.2 grams of Fe₂O, from a synthesis that has a 88.3% yield is: (a) 725.2 grams (b) 620.3 grams (c) 641.8 grams (d) 521.4 grams berdeats 11735 heated until all of
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