To drive off any volatile materials that might alter the mass of crucible and cover.
We want to weight exactly only the material - variations of the crucible mass lead to errors. That's why the mass of the crucible must be stabilized.This is very important in gravimetry, it is a basic rule.
mass hysteria
Admiral Hackett is in charge of the Crucible. All the Scientists, Engineers, and most of the people you recruit will contribute to building the Crucible.
The Crucible is still relevant today as mass fear, and political scapegoating still occurs.
To drive off any volatile materials that might alter the mass of crucible and cover.
The empty crucible is heated AND WEIGHED, so that you can drive off any moisture and/or other particles that might add to the weight of the empty crucible. You will eventually weigh the crucible again at the end of the experiment to determine the weight (mass) of some compound. Thus, it is important to have a correct "starting mass" of the crucible.
We want to weight exactly only the material - variations of the crucible mass lead to errors. That's why the mass of the crucible must be stabilized.This is very important in gravimetry, it is a basic rule.
It reduces errors caused by variations in the weight of the crucible itself.Taring is accurately establishing the empty weight of the crucible, which can vary with contaminants, residue, or oxides. By repeatedly heating, cooling, and weighing the crucible, until there is only an acceptable variation between weighings, the actual weight of samples before and after incineration can be more precisely measured.
Firing the empty crucible and cover to red heat removes any moisture and contaminants that may be present on the surfaces. This helps ensure a clean and consistent environment for subsequent experiments or material processing.
mass hysteria
Well you see that the heat causes the crucible to blow up, almost causing an explosion. This then causes the MgNO4 gas to heat to it's 1.023 degree compound of 2 to the -2 power. The air inside of the metal makes the gas for the crucible go down and the mass changes in a way that is similar to a dog when he eats very hot grass on a very warm summer day (150 degree gas; 100 degree day). Hope this helps, Gilbert
Admiral Hackett is in charge of the Crucible. All the Scientists, Engineers, and most of the people you recruit will contribute to building the Crucible.
No, an empty container will not increase in mass when heated. Heating an empty container will not create additional matter within the container to increase its mass.
The Crucible is still relevant today as mass fear, and political scapegoating still occurs.
The mass of an empty steel can is typically around 15 to 20 grams.
Determining the mass of a hot crucible and lid is inadvisable because heating can cause volatile substances to escape or react, leading to an inaccurate measurement. Moreover, handling hot objects increases the risk of burns or accidents. It is recommended to allow the crucible to cool to room temperature before measuring its mass.