The most important commercial ore of chromiumis chromite (FeC r 2 O 4 ). One of the steps in theprocess used to extract chromium from the ore is thereaction of chromite with coke (carbon) to produceferrochrome (FeC r 2 ).2C(s) + FeC r 2 O 4 (s) → FeC r 2 (s) + 2C O 2 (g)What mole ratio would you use to convert from molesof chromite to moles of ferrochrome?

Q: Silicon dioxide reacts with carbon at high temperature to form an extremely hard silicon carbide.…

A: ANSWER

Q: tanium occurs in the magnetic mineral ilmenite (FETİO3), which is ten found mixed up with sand. The…

A:

Q: How many grams of oxygen are required to burn 0.10 mole of C3H8?                         C3H8 + O2…

A:

Q: f AH for the process H20(g) H2O(1) is:

A:

Q: What volume of chlorine gas, measured at STP, is necessary for the complete reaction of 5.02 g of…

A: Given information, Molar mass: Al =  26.98 g/mol, Cl2 = 70.90 g/mol, AlCl3 = 133.34 g/mol     2…

Q: 1. a. How many grams of Mn3O4 can be obtained from 1.00 g MnO2?   b. how many ounces of Mn3O4 can…

A: The chemical reaction is given by 3 MnO2 → Mn3O4 + O2

Q: An alloy is found to be 41.8% Zn and the rest is Cu. If 15.0g of Cu is added to 45.0g of this alloy,…

A: To calculate percentage of Cu in a Zn-Cu alloy after the addition of fresh Cu to the already…

Q: A student synthesizing [Cu(NH3)4(H2O)]SO4crystals, rushing for time, decided to dry the crystals in…

A: We can expect a negative error with the yield. This is because the complex on heating release water…

Q: A sample of impure pyrite known to be approximately 90-95% w/w FeS 2 is to be analyzed by oxidizing…

A:

Q: Acetylene torches are used for welding. These torches use a mixture of acetylene gas, C2H2, and…

A:

Q: mass

A:

Q: The gravimetric analysis of a 11.432-gram sample of silver ore yields 4.918 grams of silver iodide…

A: 1- First determine the mass of silver metal in the ore :  a) moles of AgI = [ Mass / Molar mass of…

Q: Acetylene torches are used for welding. These torches use a mixture of acetylene gas, C2H2, and…

A: The answer to the following question is given as -

Q: 6. A 1 gram mixture of CaCO3 and SRCO3 is ignited and converted to CaO and Sro. The mass of oxides…

A: Mass of mixture (CaCO3 + SrCO3) = 1 g  Mass of residue (CaO + SrO) = 0.6 g  % of CaCO3 = ?

Q: A chemist has two alloys, one of which is 5% gold and 15% lead and the other which is 40% gold and…

A: A chemist has two alloys, one of which is 5% gold and 15% lead and the other which is 40% gold and…

Q: How many liters of CO2 are produced when 3.46 Fe2O3 is converted to cast Fe at STP? Fe2O + 3CO →…

A: STP At the condition of Standard temperature and pressure, the temperature is 273 K and pressure is…

Q: Coke is a porous fuel with a high carbon content used in the smelting of ores, production of metals,…

A: Introduction In water gas reaction, the reaction of carbon monoxide takes place with water vapor.…

Q: A sample of mineral containing water as the only volatile constituent contains 26.40% SiO2 and 8.86%…

A: Answer:- This question is answered by using the simple concept of calculation of percent of…

Q: Which substance is injected in gas fuel to remove SO3 gas M9SO4.7H20 ; Mgo Mg

A: The substance which is injected in gas fuel to remove SO3 gas is

Q: Toxic Cr(VI) can be precipitated from an aqueous solution by bubbling SO2 through the solution. How…

A: Number of moles =concentration X volume Here concentration of cr =5.00    X 10 =10 m

Q: A student investigated the stoichiometry of the nickel (II) nitrate - sodium sulfide - water system…

A: Step 1) Given compound: Sodium sulphide = Na2S  Nickel nitrate = Ni(NO3)2 Reactants : Sodium…

Q: The Normality of concentrated sulphuric acid is ---(when p% =96% , d = 1.84 g./ml) O 3.6 O 18.02…

A:

Q: 1. What volume of dry hydrogen would be produced under standard conditions when 0.252 g of magnesium…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: How many grams of carbon dioxide can be produced, if 7 mole of ethane are reacted with excess…

A:

Q: One method of removing CO2(g) from a spacecraft is to allow the CO2 to react with LiOH.…

A: We make use of the above equation and also the given data to find the volume of CO2 required.…

Q: You reduce a 0.9355g solid platinum (IV) oxide with 0.0879g hydrogen gas to yield elemental platinum…

A: Limiting reagent is defined as the reactant which is present in a limited quantity in the reaction.…

Q: What mass in grams of NaN3 is required to produce 50.2 L of N2 gas (density = %3D 1.25 g/L)…

A: Given, Volume of N2 = 50.2L Density of N2 = 1.25g/L

Q: Toxic Cr(VI) can be precipitated from an aqueous solution by bubbling SO2 through the solution. How…

A: Some toxic substances are precipitated from their solution with the help of some reagents. In these…

Q: When a large amount of water was poured on 100 gr of calcium carbide CaC₂, 28.3 gr acetylene C₂H₂…

A: Percentage Yield = 70%

Q: How many liters of oxygen gas at STP are required to react with34.7 g of aluminum in the production…

A:

Q: A 8.12 kg mixed-mineral sample contains chromite (FeCr2O4) as the only chromium-bearing ore. The…

A:

Q: How many grams of water will be lost when 8.000 g of YBr3 .9H2O is heated?

A: The question is based on the concept of stoichiometry of reaction. first we write the balance…

Q: Consider the smelting of iron ore which consists of Fe2O3 and Fe3O4. If Fe is produced in the pig…

A:

Q: Tin is extracted from its ore cassiterite, SnO2 by reaction with carbon from coal. Write a balanced…

A: First, write the balanced equation for the extraction of tin from cassiterite. The reaction can be…

Q: The coefficients needed to balance the second step of the Ostwald process, __ NO. + __ O 2 -----> __…

A: In a balanced chemical equation, the number of atoms of each element is equal on both sides of the…

Q: A 6.35 kg mixed-mineral sample contains chromite (FeCr2O4) as the only chromium-bearing ore. The…

A:

Q: How many mol of CO2 were produced and how many milligrams CaCO3 were consumed

A:

Q: The nitrogen content of organic compounds can be determined by the Dumas method. The compound in…

A: Given that:Total vapor pressure = 726 torrVapor pressure of water = 23.8 torrVolume of N2 = 31.8…

Q: Toxic Cr(VI) can be precipitated from an aqueous solution by bubbling SO2 through the solution. How…

A: Stoichiometry is used to relate the amount of reactants and products in a balanced chemical…

Q: A secondary step in the process to produce ultra-pure silicon is to combine silicon tetrachloride…

A:

Q: ZnS+O2=ZnO+SO2 How many kilograms of sulfur dioxide are produced when 160 kg of ZnS is roasted in…

A: The balanced chemical equation can be written as follows-

Q: 7. Given that the kf of water in a car radiator filled with liquid in the ratio of 62 g of ethylene…

A:

Q: If 55 g of SiO2  glass is placed into 111 L of 0.032 M HF, is there enough HF to dissolve all of the…

A: The balanced equation for the reaction is given below.

Q: A different hydrate of nickel(II) chloride, NiCl2• XH2O, decomposes to produce 45.5% water.…

A: water of crystallization -when inside the crystal some water molecules are present then those water…

Q: 12. What is the mole ratio of oxygen to carbon dioxide in the combustion reaction for propane?…

A: Start with the balanced chemical equation for the combustion of propane…

Q: Sulphuric acid can be prepared by burning sulphur in oxygen (equation 1), then oxidize the sulphur…

A:

Group 14 Elements

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