Determine the mass percent of anhydrous sodium carbonate (Na2CO3) and water on sodium carbonate decahydrate (Na2CO3 • 10 H2O).

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?