Case #6: Hold the phone! A creepy no-faced zombie held up the jewelry store and made off with a priceless diamond. The CSI team found a sticky substance at the scene. A mass spec analysis showed the 0.25 g sample to be 0.0444 g O, 0.07775 g N, 0.11665 g C, and 0.0112 g H. Who should the police question? Whodunnit? Suspect 1: George Norman Suspect 2: Becky Baker George Norman recently had an accident where he cut himself with a knife. He cleaned the wound with rubbing alcohol. The formula for rubbing alcohol (isopropanol) is C3H8O. Becky Baker is a world famous pastry chef. She had just finished baking a cake at the time of the crime. The recipe called for vanilla. The formula for vanilla is C8H8O3. Suspect 3: Liz Lemon Suspect 4: Ben Linus Liz Lemon just had her nails done and she still has traces of nail polish remover on her hands. Nail polish remover contains acetone. The formula for acetone is C3H6O. Ben Linus had been walking around in the rain for about an hour before the crime he was suspected of occurred. He was dripping wet with water at the time. The formula for water is H2O. Suspect 5: Jenna Drinker Suspect 6: Claire Coffee Jenna Drinker was making cocktails at the Corner Bar just before the crime occurred. She had traces of vodka (ethanol) on her hands. The formula for ethanol is C2H6O. Claire Coffee is the barista at the local Java Shack. She had just finished preparing an espresso when the crime occurred and still had coffee grounds on her hands. The formula for caffeine (from the coffee) is C8H10N4O2.
Case #6:
Hold the phone! A creepy no-faced zombie held up the jewelry store and made off with a priceless diamond. The CSI team found a sticky substance at the scene. A mass spec analysis showed the 0.25 g sample to be 0.0444 g O, 0.07775 g N, 0.11665 g C, and 0.0112 g H. Who should the police question?
Whodunnit?
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Suspect 1: George Norman |
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Suspect 2: Becky Baker |
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George Norman recently had an accident where he cut himself with a knife. He cleaned the wound with rubbing alcohol. The formula for rubbing alcohol (isopropanol) is C3H8O. |
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Becky Baker is a world famous pastry chef. She had just finished baking a cake at the time of the crime. The recipe called for vanilla. The formula for vanilla is C8H8O3. |
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Suspect 3: Liz Lemon |
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Suspect 4: Ben Linus |
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Liz Lemon just had her nails done and she still has traces of nail polish remover on her hands. Nail polish remover contains acetone. The formula for acetone is C3H6O. |
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Ben Linus had been walking around in the rain for about an hour before the crime he was suspected of occurred. He was dripping wet with water at the time. The formula for water is H2O. |
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Suspect 5: Jenna Drinker |
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Suspect 6: Claire Coffee |
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Jenna Drinker was making cocktails at the Corner Bar just before the crime occurred. She had traces of vodka (ethanol) on her hands. The formula for ethanol is C2H6O. |
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Claire Coffee is the barista at the local Java Shack. She had just finished preparing an espresso when the crime occurred and still had coffee grounds on her hands. The formula for caffeine (from the coffee) is C8H10N4O2. |
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Suspect 7: Mick Jones |
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Suspect 8: Blondie Carmichael |
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Mick Jones is British and always adds malt vinegar to his fries (or chips, as he calls them). On the day of the crime, he spilled vinegar all over his hands. The formula for vinegar is C2H4O2. |
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Blondie Carmichael just got done touching up her roots with hydrogen peroxide, and she spilled the peroxide all over the place just before the crime occurred. The formula for hydrogen peroxide is H2O2. |
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Suspect 9: Archie Starr |
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Suspect 10: Sandy Snickers |
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Archie Starr is addicted to sugar-free energy drinks. He was so jittery from all the caffeine that he accidentally shook the can too much and sprayed half the drink on himself. The formula for the artificial sweetener aspartame is C14H18N2O5. |
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Sandy Snickers works at the local candy shop. Just before the crime, she finished designing the store’s new window display and still had chocolate all over her hands. The formula for chocolate (theobromine) is C7H8N4O2. |
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Given:
Mass of the sample= 0.25 g
Mass of O =0.0444 g
Mass of N =0.07775 g
Mass of C =0.11665 g
Mass of H =0.0112 g
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