A sample of an unknown hydrocarbon contains 23.20 g carbon, 1.90 g hydrogen, and 6.08 g oxygen. What is the percent composition? C% H% O

Q: A compound contains only C, H and S. Combustion of 45.0 g of the compound produces 75.4 g CO2 and…

A: Since all the carbon in CO2 is coming from the compound only  Hence moles of C in CO2 =  moles of C…

Q: Combustion of 7.73 mg of an unknown substance yields 13.3 mg CO2 and 4.06 mg H;O. The unknown…

A: Given: Compound contains only C, H and O. Mass of compound combusted = 7.73 mg = 0.00773 g…

Q: Gaseous methane CH4 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and…

A:

Q: Combustion of a hydrocarbon in a limited supply of air produces COCO in addition to CO2CO2 and…

A: You don't provide the amount of water. But based on my experience put this value. If this value is…

Q: The taste of sour milk is lactic acid. What is the molecular formula for lactic acid if the percent…

A: Given data,Percent composition of C=40%Percent composition of H=6.71%Percent composition of…

Q: 6. The composition of a given substance is as follows: 3.5 mol C, 2.52 g H, 24.0 g O, 3.01 x1023…

A:

Q: A particular compound is comprised only of the elements C, H, N, and Cl. Combustion analysis of…

A: Given that: Total mass of sample = 14.30 g Mass of CO2 = 31.22 g Mass of H2O = 6.764 g Mass % of N=…

Q: A compound contains, by mass, 81.7% carbon and 18.3% hydrogen. A 0.15 mole sample of this compound…

A: Given  % Carbon  = 81.7 %  % H   =  18.3 %  Number of mole     = 0.15 mole  Mass of compound = 6.6…

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

A: Given,

Q: 1 Compound X has a molar mass of 283.89 g-mol and the following composition: element phosphorus 0…

A: Given that the mass percent of P is 43.64 % and the mass percent of O is 56.36%.

Q: For the balanced chemical reaction 4Al + 3O2 → 2Al2O3 how many moles of Al2O3 can be made by…

A:

Q: Chalk is composed of calcium carbonate, CaCO3. What is the percent by mass of calcium in calcium…

A: The objective of this question is to calculate the percent by mass of calcium in calcium carbonate…

Q: n unknown compound contains only C, H, and O. Combustion of 4.30g of this compound produced 10.5 g…

A: Empirical formula of a chemical compound is defined  as simplest positive  integer ratio of atoms…

Q: Calculate the percent composition by mass of each element in Al(OH)3. Use at least three significant…

A: 1 mol of Al(OH)3 contains 1mol of Al, 3 mol of O and 3 mol of H atoms.  Molar mass of Al(OH)3 =…

Q: 1. A compound that contains only carbon, hydrogen, and oxygen is 40.54% C and 5.44% H by mass. What…

A: “Since there are multiple questions in this question and it is not mentioned that which one has to…

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

A: (1) Empirical formula is the representation of different elements in a given compound as a  Normal…

Q: The analysis of a compound gives the following percent composition by mass: C: 56.70 percent; H:…

A: The molecular formula C13H23S1O4 is calculated from percentage composition and molar mass of…

Q: 1. Chloropicrin, CCl3NO2, is used as an insecticide. It is prepared by the reaction of nitromethane,…

A:

Q: What is the percent by mass of hydrogen in Ca(OH)2? Group of answer choices 2.72 % 1.36% 21.6 %…

A: % by mass basically tells about the concentration of one element present in the mixture. The formula…

Q: Xylene, an organic compound that is a major component of many gasoline blends, contains carbon and…

A: Xylene, an organic compound and contains carbon and hydrogen only. Mass of xylene sample=17.12 mg…

Q: Assuming complete reaction, how many moles of HCl(g) can be produced from 0.100 mol of Cl2(g)?

A: H2(g) + Cl2(g) ----> 2HCl(g)  given :- 0.100 mol Cl2(g)  To calculate :- number of moles of…

Q: Peroxyacylnitrate (PAN) is one of the components of smog. It is a compound of C, H, N, and O.…

A: Since the total % of all the 4 atoms present in the compound should be = 100 %  Hence % of C + % of…

Q: Complete combustion of a 1.448 g sample of a hydrocarbon (only carbon and hydrogen present),…

A: Given -> Weight of hydrocarbon = 1.448 gm Weight of CO2 = 3.128 gm Weight of H2O = 1.121 gm

Q: Wine is approximately 12% ethanol (CH3CH2OH) by volume. Ethanol has a molar mass of 46.06 g/mol and…

A:

Q: Cinnamic alcohol is used mainly in perfumery, particularly in soaps and cosmetics. Its molecular…

A: Given,Molecular formula of Cinnamic alcohol is C9H10O Mass of sample = 0.836 gRequired,…

Q: Calcium sulfateis a white crystalline powder. Gypsum is a mineral, or natural substance, it is a…

A:

Q: 4a Calculate the empirical formula of a compound given the following percent composition. c=-44.5%;…

A: Given data, C = 44.5% H = 3.70% N = 51.8%

Q: 3. A compound's moleeular mass is 480 g/mol. Its percentage composition is 60% sulfur and 40%…

A:

Q: The empirical formula of a compound is HO. This molecule has a molar mass of 17.01 g/mol. The…

A:

Q: Brasses are alloys in which copper is the primary component and zinc is the second most abundant…

A: Given: % of Zinc in naval brass = 39.25 % Mass of sample of naval brass = 72.1 g Molar mass of Zinc…

Q: The empirical formula for a compound is CHN. What is the molecular formula of this compound if 0.1…

A: Simplest whole number ratio of atoms present in a compound is called empirical formula  Empirical…

Q: 8. A chemical compound is determined to have a percent composition of 23.54% C, 1.976% H, and 74.48%…

A: The empirical formula of a compound shows the number of atoms in terms of the smallest whole number…

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

A:

Q: An unknown compound has a molar mass of 236.7 g/mol. Given a percent composition by mass of 10.13%…

A:

Q: Butane has a molecular weight of 58.1 grams in one mole.  How many carbon atoms are in 3.00 gg of…

A: Butane is a hydrocarbon made of four compounds and is represented as C4H10

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.