answersLogoWhite

0


Best Answer

SO that the excess heat do not cause any problem.

User Avatar

Wiki User

9y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why do have to put aside the crucible lid at the beginning and ongoing heating process?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Chemistry

What is the purpose of taring the crucible before using it in an incineration process?

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.


How would you thermally decompose silver oxide?

Silver oxide (Ag2O) can be thermally decomposed in a process known as thermal decomposition. This process involves heating the silver oxide to temperatures between 400 and 600 degrees Celsius. To do this you will need a furnace crucible and heating source. Here is a step-by-step guide on how to thermally decompose silver oxide:Place the silver oxide in a crucible and place the crucible in the furnace.Heat the silver oxide to 400-600 degrees Celsius depending on the desired reaction outcome.Allow the silver oxide to heat for up to an hour depending on the amount of silver oxide being thermally decomposed.Once the silver oxide has reached the desired temperature turn off the heating source and allow the furnace to cool.Once the furnace has cooled remove the crucible and inspect the silver oxide. The silver oxide should now be in two parts: silver and oxygen.Thermal decomposition of silver oxide is a relatively simple and safe process and can be used to create silver and oxygen from silver oxide.


Is heating ammonium bicarbonate a physical or chemical change?

Heating is a physical process but thermal decomposition is a chemical process.


What is ultramarine blue made from?

The current synthesis process for the ultramarine pigment, based on the process discovered by Guimet, consists of heating a mixture of metakaolin, sodium carbonate, sulfur and a reducer. These reagents are mixed in the desired proportions, then are calcined in furnaces. Ultramarine blue calcination process calcined ultramarine pigment is a very complex process, to consider many features to adapt the conditions to complete the reaction. According to different calcination ultramarine pigmentstove, can be divided into a se aled tube furnace, crucible furnace, muffle furnace and other production methods. Sealed tube furnace production is the manufacture of solid-phase method ultramarine blue more advanced methods, which can make the process manufacturing ultramarine blue to mechanization and automation proceed. The temperature cycle is comprised of several steps: heating to 800° C. in the absence of air, followed by an oxidation step at a lower temperature.Currently only a few countries in the world produced by this method. China currently uses a crucible furnace calcination ultramarine pigmentinverted smoke.The pretreated feedstock, according to a certain formula evenly mixed, compacted into the crucible; the loading capped crucible, preferably sealed with mud, pour code in the crucible, the closed door, and calcined to flocks of blue firing crude products.Ultramarine blue because the calcination carried out during the gas exchange, it requires the crucible is porous. Select the appropriate porosity, the reaction is complete the necessary condition ultramarine pigment. Fineness according to charge, the charge density of the crucible, furnace structure and size, process control conditions, the porosity of the crucible have different requirements.http://www.xcolorpigment.com/news/?44.html


Oxygen can be obtained by heating?

With the exception of nuclear fusion oxygen cannot be obtained by heating anything. Certainly no heating process on earth is capable of producing oxygen.

Related questions

Why is the position of The Crucible lid critical to the dehydration of the salt during the heating process?

it is critical to set the lid just off the lip of the crucible to allow the evolved water molecules to escape on heating.


What is the purpose of taring the crucible before using the incineration process?

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.


What is the purpose of taring the crucible before using it in an incineration process?

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.


What phase of market research is an ongoing process?

Strategic market research is an ongoing process.


How would you thermally decompose silver oxide?

Silver oxide (Ag2O) can be thermally decomposed in a process known as thermal decomposition. This process involves heating the silver oxide to temperatures between 400 and 600 degrees Celsius. To do this you will need a furnace crucible and heating source. Here is a step-by-step guide on how to thermally decompose silver oxide:Place the silver oxide in a crucible and place the crucible in the furnace.Heat the silver oxide to 400-600 degrees Celsius depending on the desired reaction outcome.Allow the silver oxide to heat for up to an hour depending on the amount of silver oxide being thermally decomposed.Once the silver oxide has reached the desired temperature turn off the heating source and allow the furnace to cool.Once the furnace has cooled remove the crucible and inspect the silver oxide. The silver oxide should now be in two parts: silver and oxygen.Thermal decomposition of silver oxide is a relatively simple and safe process and can be used to create silver and oxygen from silver oxide.


Why is succession considered an ongoing process?

Succession is the sequence in which one person after another succeeds to a title, throne or estate. There is always a replacement, and that is why it is an ongoing process.


What is the ongoing process of tearing down and rebuilding bone matrix called?

The ongoing process of tearing down and rebuilding bone matrix is called osteoclasts.


Is heating ammonium bicarbonate a physical or chemical change?

Heating is a physical process but thermal decomposition is a chemical process.


Which phase of market research is an ongoing process?

operational


The ongoing process of discovery in science?

scientific inquery


What is the ongoing process of science?

scientiest keep on study


Is heating the salt solution a chemical or physical?

Heating is a physical process.