How is this model useful?

1. Water is easily contaminated by both biological and chemical contaminants. Define and give 3 examples of each 2. What happens when you mix an acid and a base 3. How does ppm compare to ppb 4.

How is potential measured?

How hot Will a 2.3L balloon have to get to expand to a volume of 250L?

Naphthalene is a hydrocarbon used in mothballs, in a combustion analysis it produced 8.80 g of co2 and 1.44 g of water. calculate the empirical formula.

Given that the ka for hocl is 3.5 * 10-8, calculate the k value for the reaction of hocl with oh-. a. 3.5 * 10-22 b. 3.5 * 10-8 c. 2.9 * 10-7 d. 3.5 * 106 e. none of these

C AL = - 4.184 * 39.85 * 4.7 : 11.98 * (-72.9)

2 CO (g) + O2 (g) → 2 CO2 (g)

3h2 (g) + o3 (g) 3h20 (g) arrow after the o3 (g) whats the overall enthalpy?

For the reaction represented by the equation cl2 + 2kbr ® 2kcl + br2, calculate the percentage yield if 200. g of chlorine react with excess potassium bromide to produce 410. g of bromine.

The surface area and depth of the Pacific Ocean are 1.8 X 10^8 km^2 and 3.9 X10^3 m respectively, Calculate the volume of the Pacific Ocean in liters.