Worksheet – Empirical formulas and Molecular formulas Periods  Show all work and box in your answers Can you help me out with these 3 problems  5. Qualitative analysis shows that a compound contains 32.38%sodium, 22.65% sulfur and 44.99 % oxygen. Find the empirical formula of this compound. 6. Analysis of a 20.0 gram sample of a compound containing only calcium and bromine indicates that 4.00 grams of calcium are present. What is the empirical formula of the compound formed? 7. A 60.00 gram sample of tetraethyl lead, a gasoline additive, is found to contain 38.43grams of lead, 17.83 grams of carbon, and 3.74 grams of hydrogen. Find its empirical formula.

Q: empirical formula

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Q: A compound contains 36.68 %C, 2.309 %H, and 61.01 %Br (by mass). Determine the empirical formula of…

A: Element C H Br Mass % 36.68 2.309 61.01 moles 36.6812 2.3091 61.0180 simple ratio of moles 4 3…

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: Another compound that is often found in kidney stones is calcium phosphate, Ca3(PO4)2(s). The two…

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Q: An organic compound consists of Carbon, hydrogen and sulfur. Complete combustion of 3.50 g this…

A: The given compound consist of carbon, hydrogen and sulfur. We have to determine the empirical…

Q: What is the difference between an empirical formula and a molecular formula? Provide an example.

A: There are three types of chemical formulas:-  Empirical formula is the simplest whole number of…

Q: Determine the chemical formula of a compound that contains 56.6% K, 8.69% C and 34.7% O. Write any…

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Q: Mandelic acid is an organic acid composed of carbon (63.15%), hydrogen ( 5.30%), and oxygen…

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Q: A compound is 80.0% carbon and 20.0% hydrogen by mass. Assume a 100.-g sample of this compound. The…

A: Given, Mass % of C = 80.0 % Mass % of H = 20.0 % Mass of the compound = 100 g Empirical formula of…

Q: a. Two compounds have the same composition: 92.25% C and 7.75% H. Obtain the empirical formula…

A: Empirical formula is the simplest formula of a compound where atoms of participating elements are…

Q: A sample of Water, H2O, has a mass of 55 grams. Determine the number of moles in the sample.

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Q: a. Write the balanced chemical equation for the diagram above b. If you have 0.031 moles of…

A: A balanced chemical reaction is one where the number of atoms of each element is same on the product…

Q: A solution of ammonia and water contains 2.00×1025 water molecules and 7.60×1024 ammonia molecules.…

A: First we need to calculate the hydrogen atoms from both water and ammonia molecules. Then total…

Q: A 15.27 g sample of Mo₂O₂ (s) is converted completely to another molybdenum oxide by adding oxygen.…

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Q: Read the information below, then answer the question. A laboratory assistant was experimenting with…

A: Zn : Zinc HCl : Hydrochloric acid ZnCl2 : Zinc chloride H2 : Hydrogen gas

Q: The mineral perovskite is an excellent source for titanium. It is made up of 29.4%Ca, 35.2%Ti, and…

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Q: A compound contains carbon, hydrogen, and sulphur. A combustion analyzer collects 45.0 g of CO2,…

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Q: A 8.4877 g sample of a new compound has been analyzed and found to contain the following masses of…

A: To calculate the emperical formula,  the number of moles of each element should be calculated. Then…

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: Liquid octane (CH₂(CH₂) CH₂) will react with gaseous oxygen (0₂) to produce gaseous carbon dioxide…

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Q: Please provide all the work in detail because I will be using this to study

A: Amount of Al reacting = 1.551gNumber of mol of Al reacting = given mass / molar mass = 1.551 g /…

Q: Determine the empirical formulas of the compounds with the following compositions by mass. 13.6% C…

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Q: Combustion analysis of a compound yields: C 78.52%, H 8.39%, N 8.33%, and O 4.76%. Determine the…

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Q: 6. Borax is a naturally occurring compound that is used in the manufacture of optical glasses.…

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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: In a hands-on lab, you would determine the empirical formula of a compound containing aluminum &…

A: Given that the aluminum and sulfur react to form a compound. The compound contains 0.018 moles of…

Q: A 15.85 g sample of Mo,O, (s) is converted completely to another molybdenum oxide by adding oxygen.…

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Q: A 11.21 g sample of Mo₂O3(s) is converted completely to another molybdenum oxide by adding oxygen.…

A: Number of mol = Mass/molar mass

Q: 1.651 g of Silver is combined with 0.1224 g of oxygen. Find the empirical formula.

A: moles of silver combining = mass / atomic mass atomic mass of Ag = 108 g/mol Hence moles of Silver =…

Q: For the following reaction, 25.4 grams of diphosphorus pentoxide are allowed to react with 13.6…

A: diphosphorus pentoxide s + water l → phosphoric acid aq Mass of diphosphorus pentoxide P2O5 = 25.4 g…

Q: Please provide all the work in detail because I will be using this to study

A: Consider the mass of compound is one gram.  The percent of each element is converted to grams as,

Q: A sample of naphthalene was analyzed in the laboratory and it was determined that the sample…

A: Number of moles (mol) = Given mass (g)Molar mass (g/mol)Given that:Number of moles= 0.457 molesMolar…

Q: empirical and molecular formula of the compound

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Q: A 27.129 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put…

A: Answer: Empirical formula is the formula containing all the atoms present in the compound in their…

Q: Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous…

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Q: Without using a calculator, which has the greater mass: One mole of carbon atoms or one mole of…

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Q: Give the empirical formula of each of the following compounds if a sample contains the following…

A: Number of moles of C, H and O can be calculated by the equation given below:

Q: A sample compound contains 19.97g Ti and 13.37g O. Determine the empirical formula of the compound.

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Q: The rotten smell of a decaying animal carcass is partially due to a nitrogen-containing compound…

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Q: Using the information from number 4, calculate the empirical and molecular formula for the scenario…

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Q: 1. Identify a total of ten (10) chemical reactions. In other words, explain in your own words.…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: Find the empirical formula for myristic acid. Express your answer as a chemical formula.

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Q: A hydrated form of copper sulfate (CUSO, · xH,O) is heated to drive off all of the water. If there…

A: Since all of the water in the hydrated salt is removed by heating, the mass of anhydrous copper…

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) ---->…

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.