22. A section of a topographic map is shown below. (Ct
1600
1500
1300
1400
1200
Contour interval: 20 m
What is the difference in elevation in meters between Point X and Point Yon
the map?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4