What mass of hydrogen gas would be produced if 46g of sodium was reacted with water?

chemical equation = 2na + 2h₂o ⇒ 2naoh + h₂

When the volume and number of particles of a gas are constant which of the following is also constant

Compare and contrast physical changes with chemical changes.

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.