About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much freshwater unavailable for human use?

When a solution of ethanol (C2H5OH) is formed in water, the ethanol molecules 1. form hydrogen bonds to the polar water molecules. 2. form covalent bonds to the polar water molecules. 3. are attracted to the nonpolar water molecules. 4.

Fuel is injected at which state diesel cycle

Explain the steps to determine presence of pb2 + ions

Which of the following expressions best represents a second order rate law? A. r = k B. r = k[X] C. r = k[X][Y] D. r = k[X]x[Y]y

3Fe + 4H2O = Fe3O4 + 4H2

Which of the following is not equal to 0.536 kilometers? 53.6 hectometers (hm) 536 meters (m) 536,000 millimeters (mm) 53,600 centimeters (cm)

Which theory states that our inner planets are rocky because rocks and metals combine at extreme temperatures, while the outer planets are gaseous because hydrogen compounds condense at colder temperatures? Hubble Doppler Kepler Nebular

Most air pollution come from a) pollen b) forest fires c) volcanic eruptions d) burning fossil fuels

How many neutrons does a calcium 48 isotope have

Carbon disulfide burns in oxygen to yield carbon dioxide and sulfur dioxide according to the following chemical equation. CS2 (l) + 3O2 (g) → CO2 (g) + 2SO2 (g) a. If 1.00 mol CS2 reacts with 1.00 mol O2, identify the limiting reactant. b.