Is the pressure of a gas the force over a given area that a gas exerts on the wall of a container

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Freezing 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.

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device