0.172 g of Mn was heated in the presence of oxygen to make 0.272 g of MnxOy.  Based on this data, the empirical formula of the resulting oxide is ...

Q: When 2.750 g of the oxide of lead is stronglyheated, it decomposes and produces 0.0640 g of oxygen…

A: The determination of the simplest form of a compound is called its empirical formula. It is…

Q: A 18.92 gram sample of copper is heated in the presence of excess fluorine. A metal fluoride is…

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Q: A 0.4647 g sample of CxHyOz was burned. The combustion produced .8635 g CO, and 0.1767 g H,O.…

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Q: A rock is 5.0% by mass fayalite (Fe₂SiO₄), 7.0% by massforsterite (Mg₂SiO₄), and the remainder…

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Q: A 16.59 gram sample of chromium is heated in the presence of excess fluorine. A metal fluoride is…

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Q: By chemical analysis, the composition of potassium phosphate is 55.19% K, 14.63% P, and 30.19% O.…

A: Given data contains, Mass percent of potassium is 55.19%. Mass percent of phosphorus is 14.63%. Mass…

Q: A materials engineer has filed for a patent for a new alloy to be used in golf club heads. The…

A: The minimum composition of elements is as follows: Mn=25%Al=6.3%C=0.65%Cr=5.5% The maximum…

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: Calculate the theoretical mass percent of barium in BaCl2∙2H2O.

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Q: The mass of water obtained in a combustion analysis of a 1.000 g sample of an organic compound…

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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: 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: A 20.97 gram sample of cobalt is heated in the presence of excess fluorine. A metal fluoride is…

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Q: Chromium metal is obtained by heating chromium(III) oxide with carbon. Calculate the mass percent of…

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Q: Calculate the percentage (%) of elements in Li;PO4.

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Q: An element consists of 4.35% of an isotope with mass 49.946 u, 83.79% of an isotope with mass…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: Calculate the mass percentage of each element in vanadium (III) acetate.

A: Given :- name of compound = vanadium (III) acetate  To calculate :- mass percentage of each element

Q: Titanium is a metal with the same streangth as steel but 45% lighter.It is also resistant corrosion…

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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 1.500-g sample of a mixture containing only Cu2O and CuO was treated with hydrogen to produce…

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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: 3. Label the molecule below as either E, Z, or neither -Show your rankings!: Br. -F

A: E–Z configuration It is used in  the IUPAC method of describing the absolute stereochemistry of…

Q: 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A: Mass of Sample = 0.933 gMass of Nickel Nitride = 1.081 gmoles of Nickel in sample = To be determined…

Q: When 4.008 g of sulfur is burned completely in abundant air, it combines with oxygen to form a…

A: The balanced chemical equation between sulphur and oxygen is given by

Q: Imagine you discover a substance in a forest mushroom and find through experimentation that it…

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Q: A 7.543 gram sample of manganese is heated in the presence of excess fluorine. A metal fluoride is…

A: The reaction between manganese and excess fluorine is as follows :-  Mn + F2 (excess) ---->…

Q: 1. What is the mass percentage composition of capsaicin? 2. What is the percentage composition of…

A: (1) Capsaicin has Following molecular formula -  C18H27NO3  And it's Molecular mass is -  =>…

Q: A 22.15 gram sample of cobalt is heated in the presence of excess oxygen. A metal oxide is formed…

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Q: Two binary oxides of the element manganese contain, respectively, 30.40% and 36.81% oxygen by mass.…

A: Empirical formula refers to the formula of a compound in which the elements are present in the…

Q: A 21.69 gram sample of copper is heated in the presence of excess oxygen. A metal oxide is formed…

A: * Mass of copper (Cu) = 21.69 g After heating this copper , metal oxide is formed with a mass of…

Q: 4A. How many grams of potassium chloride are produced from... ...2.50 g of potassium and excess…

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Q: ) Determine the empirical formula of a compound that contains sulfur and oxygen. It has

A: Simplest whole number ratio of constituent atoms within the molecule is called empirical formula…

Q: An engineer has filed for a patent for a brand new allot to be used in golf club heads. The…

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Q: the mineral hausmannite is a compound of Mn and O. If hausmannite is 72% Mn by mass, what is the…

A: Given, 72% Mn by mass

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.