. Fulgurites are the products of the melting that occurswhen lightning strikes the earth. Microscopic examinationof a sand fulgurite shows that it is a globule with variablecomposition that contains some grains of the definitechemical composition Fe 46.01%, Si 53.99%. Determinethe empirical formula of these grains.

Q: Acompoundusedasanadditiveforgasolinetohelpengineblockshowsthefollowingpercentagecomposition:…

A: Empirical formula of a compound is expressed by the minimum number of ratio of atoms present in a…

Q: Change 1.25 x 10^25 atoms of yttrium into moles of yttrium

A:

Q: Calculate the number of W atoms present in a 27.40 g sample of 47.70% pure tungsten ore.

A:

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

A:

Q: What theoretical quantity in grams of Ag2S can be obtained from the reaction of 10.5 g of ash with…

A: Information of question

Q: 1. How many grams of solid will remain from the decomposition of 9.65 x 10 22 molecules of ferric…

A:

Q: When 4.060 grams of a hydrocarbon, C,Hy, were burned in a combustion analysis apparatus, 12.74 grams…

A: Given data :

Q: What are the molecular and empirical chemical formulas of a compound made up of these molecules? H…

A: Molecular formula: It indicates the exact number of atoms of each elements present in the…

Q: Barium metel was quantitatively precipitaded from 1.52g sample of BaCl2+2H2O. The mass of the barium…

A: Mass percentage = (mass of solute / mass of solution) x 100%

Q: The number of moles in 37.80 g of C2H6O (molar mass = 46.1 g/mol) is?

A: Given information,       Mass of C2H6O is 37.80 g.     Molar mass of C2H6O is 46.1 g/mol.

Q: What is the mass percentage of C in codeine, C₁₈H₂₁NO₃? Provide an answer to two decimal places.

A:

Q: Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol O 180.29…

A: Given  Molar mass of EDTA disodium salt dihydrate = 372.24 g/mole Molar Mass of FeCl3.6H2O Molar…

Q: Suppose that a device is using a 10.0-mg sample of silicon that is doped with 1 x 10-5% (by mass)…

A:

Q: The elements nickel (Ni) and boron (B) form two binary compounds with the following compositions:…

A: Here two elements Ni and B combine with each other to form two compound. Grams of Ni per grams of B…

Q: The zinc in a 1.199 g sample of a foot powder was precipitated as ZNNH,PO4. Strong heating of the…

A: Given :  Mass of foot powder = 1.199 g  Mass of Zn2P2O7 produced = 0.4089 g

Q: 1. Given: 274.82 g Pb 42.52 g S • 63.66 g O Wanted: percent composition by mass? % Pb % S % O

A: Percent composition by mass of an element is calculated by dividing the number of parts of the mass…

Q: A 6.117gram sample of cobalt is heated in the presence of excess fluorine. A metal fluoride is…

A: We have to predict the formula for metal fluoride.

Q: What is the empirical formula for this crystalline material? Ba

A:

Q: Calculate the mass of tetraborane (B4H₁0) that contains a billion (1.0 x 10°) hydrogen atoms. Be…

A: Given,number of atoms of H = 1.0 x 109 atoms.

Q: compound consists of 65.45% C, 5.492% H, and 29.06% O on a m

A: Molecular formula defined the actual whole number ratio between different elements of a compound.

Q: In the molecule C6H12O6 are there will be 12 moles of hydrogen per mole of glucose?

A: The molecular formula of glucose = C6H12O6 It is obvious as seems from the molecular…

Q: A recently created chromium-boron compound is a component of Ironman’s armor. It was created by…

A: Given : Mass of Cr reacted = 4.372 g And mass of compound formed = 4.917 g Assuming the empirical…

Q: A hydrocarbon sample, 0.3776 g, combust in oxygen gas and produces 1.252 g CO2 and 0.3204 g H2O. Its…

A:

Q: Determine the percent composition of potassium in K2Cr2O7.   Give your answer as a percentage…

A: Given Compound is K2Cr2O7

Q: student weighs out exactly 175 mg CaCl2.2H2O and 95 mg KOH, and reacts these together to completion…

A:

Q: When 1.5173 g of an organic iron compound containingFe, C, H, and O was burned in O₂, 2.838 g of CO₂…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: FORMULAS FROM PERCENT COMPOSITION: 8. %Zn = 11.44%; %U = 41.64; %C = 16.81%; %H = 2.12%; %O = 27.9

A:

Q: See the example in Introduction for set-up of calculations. Calculate the number of a) moles of F b)…

A: Number of moles is given by the ratio of mass of the substance to that of the molar mass of the…

Q: It was found that 0.10 g of nitrogen combine with oxygen to produce 0.328 g of the oxide. Determine…

A: In question Following information given -Mass of nitrogen Oxide = 0.328 gMass of nitrogen combined =…

Q: Write the empirical formula for at least four ionic compounds that could be formed from the…

A: Empirical formula is simplest formula of compound in which elements are in the ratio of simplest…

Q: 0.267 g of NiCl2 nH2O was heated to produce 0.172 g of anhydrous NiCl2. Calculate the empirical…

A:

Q: compound with the molecular formula, AB204. Mass % of oxygen in in the compound is around 45% .…

A: We can solve for x and Q. Let's start with finding the value of x. Once we have x, we can determine…

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".