You analyze a sample of a compound you made in the lab and find that it has a percent composition by mass of 72.7% carbon, 3.06% hydrogen and 24.2% oxygen. Determine the empirical formula for this compound.    Choose three answers from the listed choices to report the empirical formula you have determined.  H4 C2 O2 H2 O H3 O3 C3 C4

Q: 50.0 gram

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Q: How many hydrogen atoms are in a 12.2 g sample of ammonia (NH3) 29 x 10^24 57 x 10^24 31 x 10^23 14…

A: Mass of ammonia = 12.2 g  Molar mass of ammonia = 17 g/ mol  Moles of ammonia = mass/ molar mass…

Q: Fructose is a very sweet natural sugar that is present in honey, fruits, and fruit juices. It has a…

A: Given that, %C= 40% %H=6.7% %O=53.3% Molar mass of Fructose=180.1 g mol-1 Then,

Q: A compound is analyzed and found to contain 12.1% carbon, 16.2% oxygen, and 71.7% chlorine (by…

A: Assuming 100 g of the compoun. Given : % of C = 12.1 %  % of O = 16.2 %  % of Cl = 71.7 %

Q: A compound was found to contain 115.49g of Ca, 92.16 g of O, and 5.82 g of H. What is the total mass…

A: mass of Ca = 115.49g mass of O = 92.16 g mass of H =  5.82 g  Molar mass of Ca = 40.078 g/molMolar…

Q: The molecular formula of Aspirin is C9H;O4. How many Aspirin molecules are there in a table that…

A: Given that:  Mass of aspirin = 200mg = 200mg×1g/1000mg = 0.2g Molar mass of C9H8O4 =…

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3(Si2O5)2(OH)2 An…

A: Given: chemical formula of the talc. To find : Total number of moles of oxygen in the sample.…

Q: How many moles of silver atoms are there in 1.80 x 104 atoms of silver? O 3.30 x 103 moles O 3.00 x…

A: The given data contains, number of atoms = 1.80×1020.

Q: 50 Soap, vitamin Cand orange juice The main constituent of soap has a formula C18HON The formula of…

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Q: a) What is the mass of 2.450 x 10²⁴ atoms of tungsten (# 74)? (Be sure to write your units, chemical…

A: The solution is shown in the image below-

Q: 0.5998 -g sample of a new compound has been analyzed and found to contain the following masses of…

A: The question is based on elemental analysis. we have been given mass of the elements. We have to…

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

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Q: A certain compound containing nitrogen and oxygen is found to have 1.75 g of N for every 1.00 g of…

A: Empirical formula :-  The formula which shows only relative number (simple ratio) of  atoms of…

Q: Arsenic is a natural semi-metallic chemical that is found all over the world in groundwater.…

A: A question based on mole concept that is to be accomplished.

Q: The compound is composed of 40% Carbon, 6.7% Hydrogen, 53.5% Oxygen. The molecular mass is 60.0g/mol…

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Q: How many atoms are in 25.6 g tin? O 3.01 x 1023 atoms O 3.01x 1024 atoms O 6.02 x 1024 atoms O 1.30…

A: Given data:  Mass of tin = 25.6 g Standard data:  The molar mass of tin = 118.71 g/mol

Q: A compound has an empirical formula of C 2H 3. If a sample of the compound contains 4.36 grams of…

A: Empirical Formula :- It is the simplest ratio of number of atoms present in a compound. The ratio is…

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: Given: Mass of unknown compound = 1.000 g CO2 formed = 2.224 g H2O formed = 0.3035 g Known: Molar…

Q: compound is 92.2% Carbon and 7.76% Hydrogen. The formula mass of the compound is 78.1 g. Calculate…

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Q: The number of ammonia (NH3) molecules present in 4.85 grams of NH3is: a.1.02 x 10^25 c. 1.72 x…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: 1. An organic compound is analyzed and found to be carbon 51.90%, hydrogen 9.80%, and chlorine…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: A 45.0-mg sample of boron reacts with oxygen to form 145 mg of the compound boron oxide. What is…

A: Empirical formula is the basic simple ratio formula of a molecule after finding the moles of that…

Q: From the given molar mass and empirical formula of several compounds, find the molecular formula of…

A: Given information: Compound A having molar mass 114.26 g/mol and empirical formula C4H9. Compound B…

Q: A sample of a compound was found to contain 54 grams of aluminum, 96 grams of oxygen, and 6 grams of…

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Q: A compound is found to contain 46.68 % nitrogen and 53.32 % oxygen by mass. To answer the question,…

A: Given that, A compound having Composition of Nitrogen by mass% = 46.68% Composition of Oxygen by…

Q: 27.Formaldehyde has the formula CH₂O. How many molecules are there in 0.11 g of formaldehyde? A) 6.1…

A: Given :  Mass of formaldehyde = 0.11 g

Q: A 10.68 g sample of compound that contains only carbon, hydrogen, and oxygen was analyzed through…

A: Given mass of sample is 10.68 g. Upon combustion it gives 16.01 g CO2 and 4.37 g H2O

Q: Calculate the percent composition of oxygen in the following compounds: NaOH Al2(SO4)3 CaCO3 MnO2 In…

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Q: A mixture of calcium oxide, Cao, and calcium carbonate, CacO 3, that had a mass of 3.454 g was…

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Q: Chemistry a student was given a sample of CaCO3 * XH2O to find the empirical formula. she measured…

A: CaCO3 .xH2O  upon heating  will lose its water and this a given sample will lose some of its mass…

Q: A compound has the mass % composition of 49.97 % tungsten, 15.23 % nitrogen, 34.79 % oxygen. What is…

A: Empirical formula is simplest integer ratio of atoms in compound.

Q: How many chlorine atoms are in 12.2 g of CCl4?(a) 4.77 * 1022(b) 7.34 * 1024(c) 1.91 * 1023(d) 2.07…

A: Consider the 12.2 g of CCI4 Calculate the molar mass of CCI4 as follows: Molar mass = Atomic mass of…

Q: Combustion of a 0.66 g sample of a compound containing only carbon, hydrogen, and oxygen produced…

A: Weight of the sample = 0.66 g Weight of CO2 = 1.452 g  Weight of H2O = 0.792 g

Q: How many atoms are in 25.6 g tin? O 1.30 x 1023 atoms O 3.01 x 1024 atoms O 3.01 x 1023 atoms O 6.02…

A: Moles of tin are, Moles = mass ÷ molar mass Moles = 25.6 g ÷ 118.71 g/mol Moles = 0.22 mol

Q: Element Molar mass (g/mol) F 19.00 Sr 87.62 Using the information in the table, calculate the number…

A: In this question, we want to determine the number of formula unit of SrF2 Compound.  You can see…

Q: A compound has the mass % composition of 49.97 % tungsten, 15.23 % nitrogen, 34.79 % oxygen. What is…

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Q: What is the empirical formula of the compound?

A: The empirical formula is defined as the lowest whole number ratio of  elements present in a compound

Q: Which copper ore contains the highest percentage of copper by weight? Mathematically document…

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Q: Most fertilizers consist of nitrogen-containing compounds such as NH3, CO(NH2)2, NH4NO3, and…

A: Formula to calculate % composition:Mass % of element = mass of the element on the given formula /…

Q: A compound that is composed of only carbon and hydrogen contains 85.7% C and 14.3% H by mass. What…

A: Given data : A compound that is composed of only carbon and hydrogen contains 85.7% C and 14.3% H by…

Q: Determine the percent composition by mass of each element in Ba3(PO4)2 . 3, 4 , and 2 are subscripts…

A: percent ratio of mass of element to the molecular mass of compound is known as percent composition.

Q: A compound containing selenium and fluorine is decomposed in the laboratory and produces 2.231 g Se…

A: wt. Of Se obtained = 2.231 g wt. Of  F obtained = 3.221 g Empirical Formula = To be determined

Q: How many molecules are there in 31.8 moles of water? O 1.91 x 1022 molecules O 1.91 x 1025 molecules…

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Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

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Q: Combustion analysis of 1.200 g of an unknown compound containing carbon, hydrogen, and oxygen…

A: molar mass of CO2 = 44 g/molmolar mass of carbon = 12 g/mol1 CO2 has 1 C in itmolar mass of H2O = 18…

Q: How many moles of atoms are in each elemental sample? 1) Express your answer using two significant…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: empirical formula

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Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

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Q: Find the empirical formula for a compound that is 34.59% NA, 23.31% P, and 42.10% O by mass?  2:…

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Q: After heating, the anhydrous salt can be left on the bench several minutes before weighing * True…

A: As per our guidelines we can only solve first three sub-parts. Please resubmit the other questions…

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.