What percent of humans live near coasts and will be directly affected by the rising sea levels? 1. 50%

2. 75%

3. 5%

4. 25%

What is the molarity of a solution that is prepared by adding 57.1 g of toluene (c 7 h 8 ) (density = 0.867 g/ml) to a 250 ml volumetric flask, and then filling to the mark with benzene (c 6 h 6 ) (density = 0.876 g/ml)?

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

When a septic tank backs up a goes in to clean it out