A recently created chromium-boron compound is a component of Ironman’s armor. It was created by reacting 4.372 g Cr with excess B for form 4.917 of the chromium-boron compound. What is the empirical formula of this compound? When entering the formula place the elements in the following order: Cr, B. For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O.

Q: Cinnabar, mercury(II) sulfide, HgS, is mined as a primary source for elemental mercury. a. What is…

A: Given :  Mass of HgS = 7.5 x 105 kg  Also, atomic mass of mercury = 200.6  Molecular mass of HgS =…

Q: A 7.73 g sample of an organic compound containing carbon, hydrogen, and oxygen was burned in excess…

A: Given: Compound contains only C, H and O. Mass of compound combusted = 7.73 g. Mass of CO2 produced…

Q: A particular carborane has the following mass percentages: 26.35%C and 59.28%B. What is the…

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Q: What is the empirical formula of an oxide containing 49.5% manganese? (Hint:Oxide = compound of Mn…

A: The moles of manganese and oxygen present in the oxide are calculated as

Q: and

A: The balanced chemical reaction between CaCO3 and HCl as well as MgCO3 and HCl: Reaction 01: CaCO3 +…

Q: An element consists of 1.40% of an isotope with mass 203.973 u, 24.10% of an isotope with mass…

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Q: 9. A 1.35 g sample of a substance containing carbon, hydrogen, nitrogen, and oxygen was burned to…

A: Total weight of the substance is 1.35 g The compound consists of C,H,O & N. Amount of H2O =…

Q: chemist needs to produce 100 grams of gallium chloride, when gallium reacts with hydrochloric acid…

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Q: A 6.032 gram sample of chromium is heated in the presence of excess bromine. A metal bromide is…

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Q: 2.43 g sample of MgSO4 hydrate (MgSO4 · x H2O) is heated and 1.19 g of anhydrous MgSO4 remains.…

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Q: If a compound is composed of 6.2% Hydrogen, 39.5% Oxygen, 37.0% Carbon and 17.3% Nitrogen a.…

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Q: A 3.260 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis…

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Q: GIVE THE BALANCED CHEMICAL EQUATION FOR THE FOLLOWING REACTIONS: 1. THE REACTION BETWEEN SOLID IRON…

A: Balanced chemical equation: Balanced chemical equation can be define as the reaction in which number…

Q: A candle flame produces easily seen specks of soot near the edges of the flame, especially when the…

A: Empirical formula: The simplest positive integer ratio of atoms present in a compound is known as…

Q: (Mass of crucible is 24.98g. The mass of the cover is 11.36g. The mass of the crucible, cover, and…

A: The mass % is equal to the ratio of the mass of the substance to the total mass multiplied by 100.…

Q: Phosphorus can be prepared from calcium phosphate by the following reaction: 2Ca3(PO4)2(s) +…

A: The given equation is as, Mass of Ca3(PO4)2 = 75% of mass of Phosphorite Mass of Ca3(PO4)2 = 0.75 x…

Q: Ammonium perchlorate NH4ClO4 is the solid rocket fuel that was used by the U.S. Space Shuttle and…

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Q: 3 g of a hydrated metal chromate is heated only 1.479 g of anhydrous metal chromate remains.  What…

A: Some salts are found in their hydrated form. In hydrated form, water is coordinated with the salts.…

Q: A 16.14 gram sample of chromium is heated in the presence of excess sulfur. A metal sulfide is…

A: Mass of chromium sample is 16.14 g Mass of metal sulfide is 26.09 g Calculate the moles of chromium,…

Q: A 4.67 g sample of a pure strontium halide reacts with excess sulfuric acid, and the solid strontium…

A: Given, A 4.67 g sample of a pure strontium halide reacts with excess sulfuric acid, and the solid…

Q: When 145 g of MnCl₂ × nH₂O is heated, 92 g of the anhydrous compound is obtained. Find the number n…

A: Here n is number of moles of H2O, given that the mass of water = 92g

Q: Potassium chlorate (KClO3) decomposes to KCl and O2. Determine the mass of O2 obtained from the…

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Q: In a first expirement, a compound is analyzed and found to contain 85.63% C and 14.37% hydrogen by…

A: 1. atom % in samp;e mole Mole ratio (divided by smallest number of moles) C 85.63 85.63 /12 =…

Q: In a reaction involving manganese, Mn and sulfur, S it was determined that 0.549 g of manganese…

A: First we convert the mass sulfur and manganese to Moles. By this moles of Mn & S  , we have to…

Q: Polyethylene is a polymer consisting of only carbon and hydrogen. If 2.300 g of the polymer is…

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Q: A 10.05 g10.05 g sample of Mo2O3(s)Mo2O3(s) is converted completely to another molybdenum oxide by…

A: Atomic weight of molybdenum = 95.94.Atomic weight of oxygen = 16.00Percentage of oxygen added…

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO2 and H2O. When…

A: Combustion of hydrocarbons in presence of oxygen proudces water and carbon dioxide. If the  oxygen…

Q: etraphenylporphyrin is a synthetic compound that resembles naturally occurring porphyrins.…

A: Step 1: % by mass of C = 85.96 % % by mass of H = 4.92 % % by mass of N = 100-(85.96 + 4.92)…

Q: In a reaction, 1 mole of silver nitrate combines with 1 mole of sodium chloride. AgNO3 + NaCl…

A: This is an example of Inorganic reaction where precipitation of AgCl takes place . Details…

Q: Part a What mass of compound is present in 5.00 moles of each of the compounds in Exercise 51? Part…

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Q: Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A…

A: Given data is: Length of plate = 15.0 cm Width of the plate = 12.5 cm Thickness of plate = 3.00 mm…

Q: 2. What is the compound's empirical formula if a 0.234 g sample of the compound was burned in air to…

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Q: Molecular Weight of Ammonia Atomic weight: Nitrogen 14.0g/mol Hydrogen 1.00g/mol   2B. Nitrogen…

A: Dear student since you have posted multiple parts questions, As per BARTLEBY QnA guidelines We are…

Q: 8. Potassium persulphate (Anthion) is used in photography to remove the last traces of hypo from…

A: Empirical formula and molecular formula of compound is to be calculated.

Q: what is the mass percentage of Ag in a piece of metal with 50.4 g of Ag in a 125 g sample?

A: Given, mass of Ag = 50.4 g  mass of sample = 125 g mass percentage of Ag = ? %

Q: A sample containing 58.51 g manganese (Mn) is treated with an excess of sulfuric acid (H2SO4) to…

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Q: When a sample of cyclohexene is burned in oxygen, 4.822 g of CO2 and 1.650 g of H2O are obtained.…

A: The term combustion reactions refer to those type of chemical reaction in which a hydrocarbon reacts…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".