Complete the sentence. when an acid is added to water, hydrogen ions increase decrease stay the same disappear

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

When the mercury level in a barometer decreases that atmospheric pressure has

Astudent states that 9.0 g of baking soda will form an unsaturated solution in 100 g of water. what do you need to know to decide whether this statement is correct? a. the temperature of the water and the molar mass of baking soda b. the percent by volume of the solution and the solubility of baking soda c. the temperature of the water and the solubility of baking soda at that temperature