Silicon is prepared by the reduction of K₂SiF₆ with Al.Write the equation for this reaction.

Q: 1. Write the balanced equation of the reaction between Al and oxygen in the presence of heat.  2.…

A: Balanced chemical equation occurs when the number of the different atoms of elements in the…

Q: Lithium forms several useful organolithium compounds.Calculate the mass percent of Li in the…

A: Lithium stearate = C17H35COOLi Molar mass =

Q: In acidic solution, hydrogen peroxide reacts with Fe2+ to produce Fe3+ and H2O. Write a balanced…

A:

Q: Complete and balance the following equations. If no reaction occurs, write NR:(a) I2(s) + H2O(l)…

A: The given equations have to balanced and completed.

Q: How to Write, balance, and read the equation for the decomposition of KClO3

A: The compound given is KClO3. KClO3 decomposes to produce salt KCl and oxygen gas. Hence the equation…

Q: Predict the products and write a balanced equation for the combustion of oxygen with C8H13OH.

A: Combustion reaction in which O2 is used with the reactant and CO2 and H2O is formed. This is…

Q: Write the reaction equation for the reaction of carbon with copper(II) oxide.

A: The reactions between carbon and copper(II) oxide, as it reduces the metal oxides to the metals and…

Q: Write the balanced reaction for the synthesis of Al2O3 from its elements?

A: Since the synthesis reaction has formation of 1 mole of compound to be synthesise from its natural…

Q: In some reactions, Be behaves like a typical alkaline earth metal; in others, it does not. Complete…

A: To find: Complete and balance the given equation and  Determination of reaction in which Be behave…

Q: Treatment of Cobalt (II) oxide with oxygen at high temperatures gives Co3O4. Write a balanced…

A: A balanced chemical equation is the one in which there are equal number of atoms on both the sides.…

Q: What acid is produced by the reaction of I2O5 with water?

A: Acids are the species that produce hydronium ion when dissolved in an aqueous solution.

Q: Write the balanced equations for the following reactions (a) The reaction which leads to the…

A: Balanced chemical equation: A balance chemical equation is the reaction in which number of atoms of…

Q: What are the silicate minerals, and enlist the industries using them as raw materials?

A: Silicate minerals are the rock making minerals that are made up of silicate groups. Or we can say…

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

A:

Q: In what oxidation state is Fe in Fe(OH)3? In FeS? How is Fe(OH)3formed?

A: a) The oxidation state of Fe in Fe(OH)3 Let the oxidation state of Fe= x The oxidation state of O=…

Q: Semiconductors made from elements in Groups 3A(13)and 5A(15) are typically prepared by direct…

A: Given: Mass of molten gallium     = 32.5 g Volume of molten gallium = 20.4 L Temperature…

Q: Describe how sodium dihydrogen phosphate can be used as a pH buffering agent.<

A: A buffer solution is one that can resists change in its pH on the addition of an acid or a base.  A…

Q: What is the theoretical yield of vanadium, in moles, that can be produced by the reaction of 1.0…

A: Given  Reaction  V2O5(s)  + Ca   →  V    + CaO Number of mole of V2O5  = 1 mole  Number of mole of…

Q: 3. A sample of 10g of sodium reacts with Oxygen to form 13.83 g of sodium chloride (Na20) and sodium…

A:

Q: How many Kilograms of Iron can be recovered from  1,400 kilograms of Iron ore  (  Fe2O3 )

A: By using Molar mass of Fe2O3 and Fe we can solve this problem. 979.2kg of iron can be recovered.

Q: Describe the following :(i) The role of cryolite in electro metallurgy of aluminium.(ii) The role of…

A: In the extraction of pure metals, certain compounds or derivatives are used to ease the reaction and…

Q: What mass of CO2 produces from the decomposition of 25.5 grams of NaHCO3?

A: In all "chemical reactions," each engaged species tends to possess certain numerals called as…

Q: Write the chemical formula for manganese(IV) chromate

A: Given, a chemical name of compound manganese(IV) chromate.we are asked to write the chemical formlua…

Q: Write the formulas of the products to show why Fe3+ or Fe(H2O)63+ is acidic in water

A: An acid is a substance which can release H+ /  H3O+ ions in water.

Q: Write chemical equations for the following processes: (iv) Reduction of VO2+to produce VO2+ (v)…

A: iv) Since in VO2+ , V is in 5+ state and in VO2+ , V is in 4+ state Hence the reduction of VO2+ is…

Q: Give explanations for the large drops in melting point fromC to Si and from Ge to Sn.

A: In the periodic table, the atomic size is decreases across left to right and up to down increases.…

Q: In Ethereum, what is the function of gas?

A: The concept of Gas in Ethereum introduced to to maintain a distinct value that particularly…

Q: Selenium is prepared by the reaction of H₂SeO₃ with gaseous SO₂. (a) What redox process does the…

A:

Q: 5. Write the balanced equation of the reaction between AlCl3 and water.    6. Write the balanced…

A:

Q: What mass of aluminum is produced by the decomposition of 5.0 kg Al2O3?

A:

Q: Why is boron limited to a maximum coordination number of four in its compounds?

A: The element Boron belongs to the p-block where the last electron must enter into the p-subshell. The…

Q: Chemical formula of Co3+ And PO43-

A: In the given question Co+2 Instead Co+3 so solving consider as above. Chemical formula which denotes…

Q: Write a balanced equation to show: The formation of gas bubbles when cobalt reacts with hydrochloric…

A: A balanced equation is that chemical equation\reaction in which the number of atoms of each element…

Q: Write a chemical formula for each compound or ion,and indicate the oxidation state of the group 5A…

A: Solution: a)Phosphate ion: Chemical formula of phosphate ion is PO43-. Phosphorus (P) is the 5A…

Q: the substance not likely to contain CaCO3 is : a  dolomite b  sea shells c  a marble statue d…

A: Dolomite is a calcium magnesium carbonate with a composition of CaMg(CO3)2.Sea shells are…

Q: What is the oxidation number of S in the compound Na₂S₂O₅?

A: compound Na₂S₂O₅ is a natural compound. For Na2S2O5 Na contributes +1 charge. O-atom -2 charge per…

Q: 21. Describe the hybridization and the bonding of a silicon atom in elemental silicon.

A: The mixing of two atomic orbitals to form new hybrid orbitals with different shapes, energy as…

Q: Write balanced equations for the following reactions: a.) the heating of aluminum carbonate (b.) the…

A: The chemical equation is the representation of the conversion of reactants to products. The…

Q: What is the oxidation state of sulfur in SF2?

A:

Q: What is the role of (NH4)2HPO4? Give the balanced chemical equations for the reactions of Group IV…

A: Diammonium phosphate ((NH4)2HPO4) is one of the water-soluble ammonium-phosphate salt. It is found…

Q: How many grams of O₂ can be prepared from the thermal decomposition of 0.542 kg of HgO?

A: Given : mass of HgO = 0.542 kg  To calculate : mass of O2 produced (in g)

Q: Give the balanced chemical equations for the reactions of Group IV cations with (NH4)2HPO4.

A: Group IV cations are Ca2+ , Ba2+ and Sr2+ , these cations easily precipitated out by adding…

Group 14 Elements

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