A compound is 40.0% C, 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this compound. What are the subscripts in the empirical formula of this compound? Enter the subscripts for C, H, and O, respectively, separated by commas (e.g., 5,6,7).

Q: How many moles (of molecules or formula units) are in each sample? 20.0 kg Fe (NO3) 2 Express your…

A: Given , mass of Fe(NO3)2 = 20.0 Kg = 20,000g Molar mass of Fe(NO3)2 = 179.85 g/mol To find the…

Q: 6.15×1023 KK atoms Express your answer using three significant figures.    How many moles of atoms…

A: We know 1mole = 6.022x1023  So we can easily find the number of moles by using- Number of…

Q: If you have 42.5 moles of glucose (C6H₁206) approximately how many grams do you have? #3

A:

Q: MOLES/MOLECULES T04/S03 If a sample of CH30,C(CH,)3Co, CH3 is found to contain 4.73 · 1023 C atoms…

A:

Q: Hydrogen-containing fuels have a “fuel value” based on their mass % H. Rank the following compounds…

A: Fuel value of fuels is proportional to the percentage mass of hydrogen present in the fuels. The…

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: 8. The United States chemical industry produces more sulfuric acid, in terms of mass, than any other…

A: Molar mass of the compound is equal to the sum of the atomic masses of all the elements. Calculate…

Q: Caffeine, a stimulant in coffee and tea, a molar mass of 194.19 g/mol and a mass percentage…

A: Given,

Q: Tungsten (W) and chlorine (Cl) form a series of compounds with the following compositions:Mass % W…

A: If each tungsten atom contain one atomic mass so, need to determine the number of moles of each…

Q: Question: Calculate the number of moles in: 0.00100 g monochloromethane (CH3Cl).

A: Calculate the molar mass of monochloromethane (CH3Cl),      Molar mass of CH3Cl = 12.011 g × 1g1 mol…

Q: An unknown compound has the formula C HyO₂. You burn 0.2072 g of the compound and isolate 0.5059 g…

A: Given, An unknown compound having formula CxHyOz. Mass of the compound = 0.2072 g mass of CO2…

Q: Compound: CH₁₂ ELEMENT ATOMIC MASS X X X X # of ATOMS MOLAR MASS: SUB TOTAL % COMPOSITION

A: Dear student since you have posted multiple questions we will solve only first question for you if…

Q: 3. Combustion Analysis: A sample of a blue crystal was found at an industrial laundry facility…

A: Given the combustion of 0.6250 g of the sample in presence of excess O2 gives 1.8546 g CO2(g) and…

Q: 1. The organic solvent thiophene is a carbon-hydrogen-sulfur compound that yields CO2, H2O, and SO2…

A: Given: Mass of compound burned = 1.3020 g. Mass of CO2 produced = 2.7224 g. Mass of H2O produced =…

Q: Which of the following would NOT be an empirical formula? O C2H6 O Al203 O H3PO4 O H20

A:

Q: A student synthesizes tin oxide to create a compound with generic formula SnxOy. She does this by…

A: The mass of tin is = 30.80 g The mass of tin oxide is = 39.10 g The mass of oxygen is = 39.10 g -…

Q: Complete the table below for calculating the molar mass of the compound tetraphosphorus decaoxide. P…

A: Given compound is tetraphosphorus decaoxide. The molecular formula of tetraphosphorus decaoxide =…

Q: How many ATOMS of boron are present in 2.66 moles of boron tribromide ? ______atoms of boron. 2. How…

A: NA is  Avogadro number = 6.023*1023

Q: Ammonium nitrate is a common ingredient found in many fertilizers and is the main component that…

A: Introduction Ammonium nitrate has the chemical formula NH4NO3, and ammonium hydrogen phosphate has…

Q: Part B 118 mg C6 H12O6 in 5.01 g H20 Express your answer as a percentage. ? mass % = % Submit…

A: Mass% = (mass of solute/mass of Solution) x 100

Q: The molecular formula for dinitrogen tetraoxide is N,O,. Is this the empirical formula for this…

A: The empirical formula can be defined as the simplest whole-number ratio of all the atoms present in…

Q: Succinic acid is an important chemical used in the manufacture of polyesters and plasticizers. It…

A: 0.390 mole of Succinic acid (S.A.) has a mass of 46.1gSo, Molecular mass of S.A.= 46.1g0.390mole =…

Q: How many moles of propylene (C3H6) are in 25.0 g of the substance?

A: Given: Mass of propylene = 25.0 g Molar mass of propylene (C3H6) =   42.09 g/mol To Calculate: Moles…

Q: how to determine moleculure/ empirical formula from this  The elemental analysis of a compound…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: How many moles (of molecules or formula units) are in each sample? 0.2011 g C8H18 Express your…

A: Given, mass of C8H18 = 0.2011 g Molar mass of C8H18 = 114.23 g/mol

Q: Determine the mass in milligrams of 0.857 mol NH, CI. mg NH,Cl mass: Determine the mass in…

A:

Q: CHEMWORK With the advent of techniques such as scanning tunneling microscopy, it is now possible to…

A: The advent of advanced techniques such as scanning tunneling microscopy has revolutionized the field…

Q: empirical

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Q: . Calculate the % composition and determine the empirical and molecular formulas for the nitrogen…

A: Given : mass of Nitrogen i.e N = 12.04 g And mass of product = 39.54 g Since mass of product = mass…

Q: Convert 40.0g K3PO4  to molecules of K3PO4 . choose the correct multiple choice underneath. 40.0…

A: Given mass of K3PO4  = 40 g

Q: During a chemical reaction tin and iodine combine to form an orange solid. If the resulting tin…

A: Given,

Q: A 800 mL sample of nitrogen (N2) was col- lected by displacement of water at 24°C un- der a total…

A: Hii there, since there are multiple questions posted. We are entitled to  answer first question. If…

Q: The molecular formula of acetylsalicylic acid (aspirin), one of the most commonly used pain…

A:

Q: 6. Calculate the stoichiometric formula of a compound, which is defined by the mass composition: C:…

A: The question is based on elemental chemistry. We need to calculate empirical formula of the given…

Q: 1. A compound is found to contain 63.52 % iron and 36.48% sulfur. Find its empirical formula. 2. A…

A:

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.