Why is boron oxide often added to silica glass?

Q: Describe the hydrometallurgy process?

A: SOLUTION: Step 1: The method of metal extraction from the ore involving an aqueous solution of salt…

Q: Why does sodium fluoride have a melting point of 993°C but nitrogen has a melting point of -210°C?

A: Please find your solution below : Melting point of any substance is defined as the temperature at…

Q: At STP conditions, identify the phase under which carbon dioxide exists

A: STP Is known as standard temperature and pressure. Standard pressure is 1 atm and temperature is 273…

Q: What are alumino silicates or FELDSPARS

A: The metallic compounds which are found in nature, called as minerals whereas the minerals which can…

Q: Distinguish among the substances silicon, silica, and silicon?

A: Silicon ,  Silica and Silicone has to be distinguished.

Q: What volume of acetylene can be obtained from the 36 grams of Calcium Carbide under standard…

A: Given data: Mass of Calcium carbide = 36 g Formula used: P V = n R T

Q: Sketch the structure of a 1:1 and 2:1 layer silicates.

A: Structure of 1:1 layer silicate (kaolinite) illustrating the connection between tetrahedral and…

Q: Describe the difference between vitreous silica and soda-lime glass.

A: Soda lime-glass is also known as soda lime silica glass. It contains 70% of SiO2 along with CaO and…

Q: Differentiate the properties of carbon filter,  ceramics, and micro alloys

A: The properties of carbon filters,  ceramics, and micro alloys are differentiated below.

Q: MCQ 170: Metal oxide that turns into cement upon roasting with clay is A. NO B. Cao С. ВаО D. MgO

A: Metal oxide: Those chemical compound having metal ion as cation and oxide as anion are known as…

Q: What is the significance of leaching in the extraction of aluminium ?

A:

Q: Sketch the silicon–oxygen tetrahedron and explain how these fundamental building blocks join…

A: Complexions [SiO4]4- having a net charge of -4, to become electrically balanced, these complexions…

Q: Discuss the following sentences: 1- In alumina manufacturing, calcination process is preferred…

A: Discussing the following statements.

Q: What are some advantages and disadvantages of vitreous silica and soda-lime glass?

A: Vitreous silica is made from silica which is converted to glass. Soda lime in addition of silica…

Q: How is concrete made from Portland cement?

A: Tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetra-calcium aluminoferrate are…

Q: Calculate the composition, in weight percent, of an alloy that contains 105 kg of iron, 0.2 kg of…

A:

Q: Draw a structure consisting of SiO4 units arranged in a chain with each unit sharing two of its…

A: Silicates are compounds of silicon and oxygen with a basic unit of  [SiO44-] Silicates are of…

Q: ry rock 6. What type of sedimentary rock is fossiliferous limeston A. Clastic sedimentary rock B.…

A: 1) Clastic sedimentary rocks are rocks composed of fragments or clasts of pre - existing mineral and…

Q: How are the silica tetrahedrons linked for CaSiO3 ? Which class of silicates does this compound…

A: The given compound CaSiO3 is example of pyroxene. The main formula unit in it is SiO32-. The ionic…

Q: What is vitreous silica or fused silica?

A: Silica is silicon dioxide which is hard, brittle and it is used for making glasses.

Q: Describe what happens on the molecular level when silica is heated and then cooled to make glass.

A: The general formula of silica is SiO2 which melts on heating above 1500oC.

Q: How are the silica tetrahedrons linked for ZrSiO4? Which class of silicates does this compound…

A: The way how silica tetrahedrons linked for ZrSiO4 are shown as follows,

Q: 9. The general formula of silicate ion present cyclic silicates is (SIO3)n2n- O sio44- Si2052-…

A: Cyclic silicates contain three or more tetrahedral SiO42- units. These units are linked by two…

Q: What are some of the structural differences between quartz and amorphous SiO2?

A: A question based on solid state, which is to be accomplished.

Q: Describe the mechanism by which cement hardens when water is added.

A: Cement is binder substance used in construction of buildings. It is generally gray color substance.

Q: Silica is utilized in part to make the CPU chip in a computer.

A:

Q: How can you separate alumina (Al2O3) from silica present in bauxite ore? Write the chemical…

A: Filtering of aluminum from bauxite: Finely powdered bauxite metal is processed with a watery…

Q: Why does silica operate at highly temperature

A: Silica is widely used in industry. Since it can withstand high temperature.

Q: Whare are the aluminum oxide and magnesium oxide used?

A: The major uses of specialty aluminium oxides are in refractories, ceramics, polishing and abrasive…

Q: What are silicates? What is quartz?

A:

Q: Chemistry please explain: what is the difference between the composition of hydroxyapatite and…

A: The naturally occurring substances from which elements/metals can be extracted are called ores.…

Q: What are n-type semiconductors?

A: A n-type semiconductor is defined as a type of extrinsic semiconductor which is doped with a…

Q: 9. Amorphous silica, SiO2, has a density of about 2.2 g/cm³, whereas the density of crystalline…

A: Answer - The amorphous material has less density then the crystalline material because the amorphous…

Q: What do the silicate structures include?

A: Silicates are inorganic compounds of silicon ,having oxygen attached with it. Silicates are…

Q: What is the difference between substituted aluminum in silicates and adding sodium as modifier in…

A: Interpretation-  To tell about the difference between substituted aluminum in silicates and adding…

Q: What are purification methods of Cobalt (II) Sulphate?

A: If purifying by electrolysis, an aqueous sulfate solution at 50 to 70°C is usually used with a lead…

Q: (i) Indicate the principle behind the method used for the refining of zinc.(ii) What is the role of…

A: The process of extraction of metals ( in pure form) from minerals is termed metallurgy. Minerals may…

Q: Silica is utilized in the production of a computer's CPU chip.

A: Computer's CPU chip is made of silicon.

Q: Plaster of Paris is made from(a) Lime stone(b) Slaked Lime (c) Quick lime(d) Gypsum

A: Plaster of Paris is used in hospitals for setting fractured bones in right position for healing.

Group 14 Elements

The following elements come under group 14 of the periodic table.