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Why is it essential for magnesium chloride solution in the crucible to be heated slowly?
If the solution is not heated slowly, the solution could boil over resulting in lost mass and calculation errors
Why should you put first a heated crucible to a dessicator before weighing?
Placing a heated crucible in a desiccator before weighing allows it to cool down in a controlled, moisture-free environment. This helps prevent the absorption of water vapor from the air, which can lead to inaccurate mass measurements. Additionally, cooling the crucible in the desiccator stabilizes its temperature, reducing the risk of thermal expansion affecting the weight measurement. Overall, this practice ensures more precise and reliable results in experiments involving mass.
What is the main theme of The Crucible?
mass hysteria
Who built The Crucible in mass effect 3?
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.
How is The Crucible relevant to present day audiences?
The Crucible is still relevant today as mass fear, and political scapegoating still occurs.
WHY EMPTY CRUCIBLE HEATED BEFORE STARTED EXPERIMENT?
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.
Which property of a block remains constant when the metal is heated?
Mass
Why is it essential for magnesium chloride solution in the crucible to be heated slowly?
If the solution is not heated slowly, the solution could boil over resulting in lost mass and calculation errors
Why should you put first a heated crucible to a dessicator before weighing?
Placing a heated crucible in a desiccator before weighing allows it to cool down in a controlled, moisture-free environment. This helps prevent the absorption of water vapor from the air, which can lead to inaccurate mass measurements. Additionally, cooling the crucible in the desiccator stabilizes its temperature, reducing the risk of thermal expansion affecting the weight measurement. Overall, this practice ensures more precise and reliable results in experiments involving mass.
When cuso4 5h2o is heated in a crucible there is a loss of water hw should a student determine the amount of water lost?
To determine the amount of water lost when heating CuSO4·5H2O in a crucible, a student should first weigh the crucible with the hydrated copper(II) sulfate before heating. After heating, the student should allow the crucible to cool and then weigh it again. The difference in mass between the initial weight and the final weight will give the mass of water lost during the heating process. This method provides a direct measurement of the water loss through the dehydration of the compound.
Why does the mass change when the container is not heated to constant mass?
When the container is not heated to constant mass, the change in mass could be due to remaining water evaporating, incomplete combustion of a substance causing mass loss, or impurities being present in the sample. It's important to ensure that the container is heated until constant mass to obtain accurate and consistent results in experiments.
If you do not cool the heated crucible to near room temperature before weighing?
If you do not cool the heated crucible to near room temperature before weighing, the measurement will be inaccurate due to the buoyancy effect of the air. A hot crucible will displace more air, leading to a lower weight reading than its actual mass. Additionally, the heat may cause moisture from the air to condense in the crucible, further affecting the weight. Accurate measurements require the crucible to be at a stable, known temperature.
What happened to the mass of an object when it is cooled?
Nothing happens to the mass when its cooled (or heated).Mass is the same (law of Conservation of Mass).Volume can change, though, which affects density (since mass is constant).
Why does crucible and its contents gain mass as a result of heating magnisium in the air?
When magnesium is heated in the air, it undergoes a chemical reaction with oxygen to form magnesium oxide. This reaction increases the total mass of the crucible and its contents due to the addition of oxygen atoms from the air. The increase in mass is a result of the combination of magnesium and oxygen to form magnesium oxide.
When copper is heated strongly in an open dish its mass will?
remain constant as no mass is lost or gained during a physical change like heating copper.
Why is it important to add water to a heated crucible when obtaining the mass of MgO?
Pure MgO will absorbe water from the air causing an error in the experiment if that extra mass is not accounted for. By adding water in the very beginning you eliminate this error.
Why should you use tongs rather than fingers to handle your cooled cricible and lid?
Because fingerprints can add a considerable mass to the crucible when weighing it.
