Water molecules can react with each other. When they do, a solution is formed that A. dissociates to hydrogen gas and oxygen gas.
B. contains H3O+ and OH-ions that will conduct electricity slightly.
C. contains H30* and OH- ions but will not conduct electricity.
D. ionises to form H3O+ ions only.

What element is in the lathanide family?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

What volume does 1.70 ×10–3 mol of chlorine gas occupy if its temperature is 20.2 °c and its pressure is 795 mm hg?