Heat Capacity

[BriannaWillingham_1G]

A question involved something being placed in water, and led students to use the equation q of object=-q of water.

It said ignore the heat capacity of the vessel that this is taking place in. Conceptually though, if it gave you information for the vessel as well, would you set qvessel+qobject=-qwater?

[Betty Tesfaye 2G]

You would add the vessel's CdeltaT (mass doesn't matter) to the water because it's part of your surroundings (the vessel it holding the water you place your object into). So it would be qobject=-(qwater+qvessel).