11. What is the molarity of a solution that has 0.512 moles of NaCl dissolved in 0.24 L of solution? (Show WORK. Circle the correct 2.1M or 1.2M)

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.