Selenium, an element used in the manufacture of solar energy devices, forms an oxide that contains only one atom of selenium (per formula unit) and one or more oxygen atoms' The oxide that is formed has 37 8% oxygen by mass What is the molecular formula of the oxide?

Q: A particular antioxidant is 56.5% C, 5.7% H, and 37.7% O by mass.  Determine the empirical formula…

A: Let consider the mass for compound = 100 gram Therefore 100 gram compound contains., mass of carbon…

Q: A substance composed of only N and O has the composition by mass 69.57% O. What is the molecular…

A: Molecular formula of the compound can be determined by calculating the number of moles of all the…

Q: A compound containing only sulfur and arsenic is 30.0% S by mass; the molar mass is 428 g/mol. What…

A: Empirical formula is the smallest whole number ratio of elements present in the compound.  Molecular…

Q: Write the chemical formula for 1 mol of compound X containing 2 mol Al and 3 mol O.   X= ?

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Q: Suppose you had 20 moles of O2 and enough H2, how many moles of H2O could you make?

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Q: Spodumene is processed chemically to convert it to a material having the percent composition 18.79%…

A: The given mass percentage are: Li=18.79 % C=16.25 % O=64.96 % The empirical formula has to be…

Q: 1. Complete the table below: Name Formula Molar Mass (include units!) sodium sulfate C3N4 magnesium…

A: This question is related to nomenclature part of chemistry. The name of compound is written using…

Q: Which of the following could only be an empirical formula? N2H4 N2O4 .N2H6. N2O5

A: Empirical formula of a compound is defined as the formula of a chemical compound in which atoms are…

Q: A compound has a molar mass of 56.11 g/mol and an empirical formula of CH2 what is the molecular…

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Q: 17.1.28 g compound containing C, H and N is burned in pure oxygen producing 3.63 g CO₂, 0.867 g H₂O…

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Q: 3.) Calculate the moles of KHP in flask #3. grams KHP Molar Mass of KHP (АЗ) 204.22 g/mol moles KHP…

A: Moles - One mole means 6.022 x 1023 number of that compound.  It is found that the molecular mass…

Q: Determine the molecular formula of a compound that contains 26.7%P, 12.1% N, and 61.2% Cl, and has a…

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Q: Galantamine is a drug given to patients who have Alzheimer's disease. Its chemical formula is…

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Q: can you solve these 2 and just provide the answer I solved most of the work I just wanna make sure…

A: A mole of a substance can be defined as the mass of that substance that contains the same number of…

Q: 6.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

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Q: The empirical formula of a compound O has no relation to the molecular formula. O can be used to…

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Q: omplete the folowing sentences. 1. How many hydrogen ions (H+) are in a mole? . 2. What is the mass…

A: Fill in the blanks

Q: 22 A compound consists of 40.00% carbon, 6.71% hydrogen and 53.29% oxygen and has a molecular mass…

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Q: perchlorate is a colorless , crystalline substance whose composition is 28.2 % K, 25.6 % Cl, and…

A: Given, Element %  of  K = 28.2 % = 28.2 g Element %  of  Cl = 25.6 % = 25.6 g Element %  of  O =…

Q: what is the empirical formula of a comcompound that contains only iron and oxygen and is 22.27%…

A: Empirical formula :- The formula which gives the simplest wholenumber ratio of atoms of various…

Q: A sample contains 0.687 mol H3PO3. What is the mass of H3PO3in the sample?

A: Given that, Moles of H3PO3 = 0.687 mol  Molar mass of H3PO3 = 82 g mol-1 Then,

Q: an ingredient in some sunscreens is composed of carbon (61.31%), hydrogen (5.14%) nitrogen (10.21%)…

A: The sunscreens are composed of carbon, C = 61.31% hydrogen, H = 5.14% nitrogen, N = 10.21% oxygen, O…

Q: From a wild plant, a natural flavouring ingredient was isolated and utilised to sweeten ice cream…

A: The molecular formula is defined as an expression which is used to define the number of atoms of…

Q: 1 Compound X has a molar mass of 416.41 g-moland the following composition: element mass %…

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Q: Adipic acid is an organic compound composed of 49.314 C. 580 g/mol. dinic acid is an organic…

A: Adipic acid is an organic compound composed of 49.314 C. 43.79% O, and the rest hydrogen. If the…

Q: What is the empirical formula of a compound of carbon, hydrogen, and Oxygen that contains 51.56% and…

A: Given:: %C = 51.56%  %H = 14.09 % then, empirical formula = ?

Q: An unknown compound is comprised of 25.8% N and 74.1% O. The molecular mass of the compound is 216…

A: Solution :      The empirical formula gives us the simplest ratio of each type of atom in a…

Q: caffeine contains 49.48 C,5.10%, H, and 28.85% N, (assume the rest is oxygen) What is caffeine's…

A: In chemistry, the empirical formula of a chemical compound is the simplest whole number ratio of…

Q: If the student used 3.103 g of MoOs, how many moles of MoO3 were present?

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Q: 1,What is the percent by mass hydrogen in ammonium hydrogen arsenite (NH4)2HAsO4 Group of answer…

A: Given, compound (NH4)2HAsO4 % Mass of H = ?

Q: Potassium manganate is a dark green , crystalline substance whose composition is 39.6 % К, 27.9% Mn,…

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Q: Part D. A 28.50 g sample of a compound of carbon, sulfur, hydrogen, and combusted (burned). 35.25 g…

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Q: A compound is found to contain 31.14 % sulfur and 68.83 % chlorine by mass. whats the empirical…

A: Since, you have post a question with 2 sub-parts but the information for second part to be solved is…

Q: A molecular compound contain 92.3 % C and 7.7 % H. What is the molecular formula if it has a…

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Q: what’s the molecular formula?

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Q: A molecular compound contains 92.3% C and 7.7% H. What is the molecular formula if it has a…

A: GIVEN: Molecular compound contains 92.3% Carbon and 7.7% hydrogen.Molecular weight of the compound…

Q: Calculate the molar mass of each compound. C,H,: g/mol C„H3,02: g/mol

A: Molar mass of a compound calculated by adding the standard atomic masses of atoms present in that…

Q: In a certain unknown compound composed only of C and H. It is 89.94% C and 10.06% H and the molar…

A: Mass percent of carbon and hydrogen is given as 89.94 % and 10.06% respectively. Mass percent of an…

Q: 4. How many grams are there in 60.0 X 102 formula units of Mg, (PO),? Molar Mass: Mg: P: O: Total:

A: Molar mass of a particular compound is the sum of atomic masses of constituent elements. Moles of…

Q: A compound contains only C, H, and N. Combustion of 35.0 mg of the compound produces 33.5 mgCO2 and…

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Q: empirical formula for a compound that contains 20.24% aluminum and 79.76% chlorine.

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Q: Calculate the number of moles in the following quantities: a.)3.12 g NaHCO3 b.)570 mg ZnCl2 c.)8.9…

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Q: A compound is 7.7% (by mass) hydrogen and 92.7 % carbon. It has a molecular weight of 52 g/mole.…

A: Empirical formula are the formula which represent simplest ratio of an element present in a given…

Q: Compound is found to contain 30.9% sulfur and 71% oxygen by weight. What is the empirical ?formula…

A: Given, Compound is found to contain 30.9% sulfur and 71% oxygen by weight. Let us assume total 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.