Deadly Chemistry.

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Presentation transcript:

Deadly Chemistry

The Crime Scene Miss Sparrow found dead on the floor of the ballroom The murder weapon: 8.4 L of a clear liquid found next to her dead body Possible Chemicals Zinc nitrate (Miss Sparrow was highly allergic) Silver Nitrate (used by several members of the household)

The Suspects Professor Penguin Chemistry teacher Working in the study with Silver Nitrate solutions with concentrations between 0.17 to 0.23 M Miss Sparrow was his worst student Always late to class Broke lots of glassware Never cleaned up

The Suspects Mrs. Waterhorse Asthmatic with a prescription for zinc nitrate in the bathroom Molarity between 0.07 and 0.13 Mrs. Waterhorse was currently rooming with Miss Sparrow’s ex-boyfriend They could not be found in the lounge for comment

The Suspects Mr. Rabbit Photographer with solutions of silver nitrate in the darkroom Between 0.07 and 0.13 M Had been caught “scarlet-handed” at his own blackmail game Pictures of him and Miss Sparrow were found hidden in Sparrow’s bedroom Mrs. Rabbit has not seen the pictures

The Suspects Mrs. Longhorn Wearing the same dress as Miss Sparrow Found in the stable giving zinc nitrate to her horse because of bronchitis The strength was within the range of 0.17 – 0.23 M She knew Miss Sparrow was allergic because they were lab partners Would get angry when Miss Sparrow didn’t help with the labs

The Suspects Colonel Mustang Had silver nitrate solutions of 0.27-0.30 M in the conservatory Despised the left-wing politics of Miss Sparrow Enjoyed making explosives Was the interim assistant principal at the high school Closed the campus when Miss Sparrow (student council president) overthrew the administration and took control of the school

Your Task Obtain a sample of the murder solution by asking your teacher for it in the classroom You will also be given 0.10 M NaCl, 0.10 M Na2CO3, 0.10M AgNO3, and 0.10M Zn(NO3)2 Use any materials in your drawer or request additional materials that you may need Determine the identity and molarity of the murder weapon Solve the case: Who Killed Miss Sparrow?