1. Mystery Liquid Lab 2009

2. Glassware Used Average Density (g/mL) % Error Standard Deviation 110-mL grad cyl0.9594-3.770.0247 250-mL beaker0.9385-5.860.0391 3100-mL beaker0.8180-17.950.1147 41000-mL grad cyl0.8699-12.750.0496 52000-mL beaker1.109311.260.4117 650-mL Erlenmeyer Flask0.9718-2.530.0721 7100-mL grad cyl0.9632-3.390.0338

3. Mystery Liquid Lab 2006-2009

4. Glassware Used Average Density (g/mL) % Error Standard Deviation 110-mL grad cyl0.9674-2.970.0123 250-mL beaker0.9088-8.840.0266 3100-mL beaker0.8596-13.780.0736 41000-mL grad cyl0.9079-8.940.0394 52000-mL beaker1.01391.690.1102 650-mL Erlenmeyer Flask0.9527-4.440.1419 7100-mL grad cyl0.9783-1.870.0536

5. Dihydrogen Monoxide Each year, DHMO is a known causative component in many thousands of deaths and is a major contributor to millions upon millions of dollars in damage to property and the environment. Some of the known perils of DHMO are:

6. Dangers of DHMO Death due to accidental inhalation of DHMO, even in small quantities. Prolonged exposure to solid DHMO causes severe tissue damage. Excessive ingestion produces a number of unpleasant though not typically life-threatening side- effects. DHMO is a major component of acid rain. Gaseous DHMO can cause severe burns. Contributes to soil erosion. Leads to corrosion and oxidation of many metals. Contamination of electrical systems often causes short- circuits. Exposure decreases effectiveness of automobile brakes. Found in biopsies of pre- cancerous tumors and lesions. Often associated with killer cyclones in the U.S. Midwest and elsewhere. Thermal variations in DHMO are a suspected contributor to the El Nino weather effect.

7. What is DHMO?