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Katen [24]
3 years ago
9

In a game of "Clue," Ms. White is killed in the conservatory. You have a device in each room to help you find the murderer— a sp

ectrometer that emits the entire visible spectrum to indicate who is in that room. For example, if someone wearing yellow is in a room, light at 580 nm is reflected. The suspects are Col. Mustard, Prof. Plum, Mr. Green, Ms. Peacock (blue), and Ms. Scarlet. At the time of the murder, the spectrometer in the dining room recorded a reflection at 520 nm, those in the lounge and study recorded reflections of lower frequencies, and the one in the library recorded a reflection of the shortest possible wavelength. Who killed Ms. White? Explain.
Chemistry
1 answer:
Arlecino [84]3 years ago
7 0

Answer: Ms. Scarlet is the murderer.

Explanation: Each color has a wavelength band, some visible to the human eye (visible spectrum), some for the other animals. In this game of "Clue", the color are yellow (Col. Mustard), violet (Prof. Plum), green (Mr. Green), blue (Ms. Peacock) and red (Ms. Scarlet). Using the device and knowing each band, it's determined that at the time of murder, Mr. Green was in the dining room, because green light has the wavelength between 495 to 570nm; Prof. Plum was in the library, due to violet's light has the shortest wavelength; Col. Mustard and Ms. Peacock were either in the lounge or in the study, because of their color's light wavelength measurement. So, the person responsible for the murderer was Ms. Scarlet, as the other devices in the other places didn't register a higher wavelength, which is compatible to the red light.

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Answer:

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2NiS₂ + 5O₂ → 2NiO + 4SO₂

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Number of moles = 7.56 mol

Now we compare the moles of SO₂ with  NiS₂ and O₂.

                  NiS₂            :      SO₂

                    2                :        4

                   1.22             :       4/2×1.22 = 2.44

                    O₂               :          SO₂

                     5                :           4

                     7.56           :           4/5×7.56 =6.05

Moles of SO₂ produced by NiS₂ are less it will limiting reactant.

Mass of SO₂ = moles × molar mass

Mass of SO₂ = 2.44 mol ×  64.07 g/mol

Mass of SO₂ = 156.33 g

So theoretical yield of SO₂ is 1.56 × 10² g

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Thus the molarity of the Barium Chloride solution is 0.808 mol / L   OR  0.808 mol/dm³. 

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