An element X forms both a dichloride (XCl2) and a tetrachloride (XCl4). Treatment of 10.000gm of XCl2 with excess chlorine forms 12.550 grams of XCl4. Calculate the atomic mass of X and determine its identity.

Q: One of the Freons, CCI₂F2, is manufactured from carbon tetrachloride and hydrogen fluoride. The…

A: Given,when CCl4 reacts with HF to form CCl2F2 and HCl.mass of CCl2F2 = 117 kgmass of CCl4 = 183…

Q: 2. A compound has the following chemical formula; CuAl6(PO4)4(OH)8 4 H₂O. Calculate the mass…

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Q: • Two new elements with symbols Z and A combine. Ź forms Z¹+ and A forms A3- and the ions combine to…

A: Chemical formula of an ionic compound can be formed by criss-crossing the valencies of ions.

Q: 3 FeS2   +  11 O2   →  Fe3O4   +  6 SO3 100 g of iron sulfide was reacted with excess oxygen,…

A: 3 FeS2   +  11 O2   →  Fe3O4   +  6 SO3 Atomic masses Fe=56; S=32, O=16 Molecular mass of…

Q: How many O-atoms are there in 0.433 g of Ca(NO2)2 (MM= 132.1 g/mol)? O 3.28 x 10-3 O 1.97 x 1021 O…

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Q: A 2.4839 g sample of a hydrate of Cu(NO3)2 was heated to drive off all of the water of hydration.…

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Q: An 8.00 gram sample of the hydrated salt, CoCl2 x XH2O was thermally decomposed into anhydrous…

A: Given: Mass of hydrated salt = 8.00 g. And the mass of anhydrous salt obtained = 4.370 g.

Q: Cryolite, Na3AlF6(s), an ore used in the production of aluminum, can be synthesized using aluminum…

A: Given information: Mass of Al2O3 = 12.4 kg Mass of NaOH = 57.4 kg Mass of HF = 57.4 kg

Q: 32. How many grams of Li;N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

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: Calculate the mass percentage of carbon in a mixture that contains 244 grams of potassium carbonate…

A: Molar mass of K2CO3 = 138 g/mol Molar mass of citric acid = 192 g/mol

Q: Use stoichiometry to convert moles of Na3PO4 to moles of Ca3(P04)2.   mass of Na3PO4 (sodium…

A: A numerical problem based on mole concept. Na3PO4 and Ca(PO4)2 are prescribed whose molar…

Q: the born- haber process is produces ammonia (NH3) and is responsible for the vast increase in…

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Q: How many moles of oxygen atoms are present in 5.148 kg of calcium oxalate? O 6.594 x 102 O 1.608 x…

A: A) answer Amount of calcium oxalate- 5.148 kg = 5148 gram Molar mass of CaC2O4 = 40 + 12 ×2 + 64…

Q: Calculate the number of oxygen atoms in 25.1 g of nitric acid. O 4.80 x 1023 oxygen atoms O 7.19 x…

A: The number of moles of a substance is the mass of the substance upon its molar mass.

Q: Calculate the mass of 8.4 x 1 0 24 molecules of carbon dioxide (dry ice) (Hint: first calculate the…

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Q: Calculate the number of oxygen atoms in 25.1 g of nitrous acid. 4.80 x 1023 oxygen atoms O 6.43 x…

A: Given,  Mass of nitrous acid = 25.1 g

Q: Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

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Q: A 3.000g sample of lead (207.2 g/mol) was completely reacted with excess oxygen (16 g/mol) in a…

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Q: A binary compound between an unknown element E and hy- drogen contains 91.27% E and 8.73% H by mass.…

A: using the molecular formula is E3H8 Given moles of E presents in compound is 3

Q: Suppose a certain fertilizer has the following composition: ingredient ammonium phosphate…

A: Let us consider the mass of total mixture is 100 gram. Ammonium phosphate ,(NH4)3PO4 is present 14%.…

Q: A sample of aluminum contains 2.91 x 1022 atoms of aluminum. What is the mass of this sample?…

A: Number of aluminum atoms = 2.91 x 1022 atomsmass of sample of aluminum = ?Note: Avogadro’s number:…

Q: A 30.141 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put…

A: To determine the empirical formula , we would determine the moles of Carbon, Hydrogen , sulfur and…

Q: A 2.1880 g sample of a hydrate of Cu(NO3)2 was heated to drive off all of the water of hydration.…

A: The objective of this question is to determine the value of 'x' in the formula of the hydrate…

Q: The density of solid Fe is 7.87 g/cm3. How many atoms are present per cubic centimeter (cm3) of Fe?

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Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: We have to calculate molar mass of metal and it's identity.

Q: 74. A throat lozenge contains 5.0 mg of menthol, which has the formula C10H20O. How many moles of…

A: Given : 74. 1. How many moles of menthol are in 5.0 mg of menthol? 2.What is the mass in grams of…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Step - 1Formula for the compound = XBr3Means in 1 mol of compound 3 mol of Bromine are…

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

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

Q: Chromium(III) oxide can be made from the reaction of sodium dichromate and ammonium chloride. What…

A: Given, mass of  sodium dichromate (Na2Cr2O7) = 108.7 g mass of ammonium chloride (NH4Cl) = 61.6 g…

Q: A compound (molar mass= 324.41 g/mol) is used as a cardiac depressant. It has this percent…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Octane (C8H18), a component of gasoline, reacts with oxygen to form carbon dioxide and water. Write…

A: Octane C8H18 on  reaction with oxygen O2 produces carbon dioxideCO2 and waterH2O.The balanced…

Q: Carborundum is silicon carbide, SiC.  It is prepared by the reaction of pure sand, SiO2 with carbon…

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Q: Anhydrous CuSO4 is converted to CuSO4 · XH20 to absorb water from certain liquids. What is the value…

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Q: Explain how the atomic mass unit (amu) is defined and explain how the definition of an amu, in turn,…

A: Avogadro's number is equal to 6.0221 x 1023 number of anything is equal to 1 mole of that thing.

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".