Isoprene is a starting material in the formation of synthetic rubber. It is composed of 88.17% Carbon (C) and 11.83% Hydrogen (H). Its molar mass is 68.11 g/mol. What is its molecular formula? CH2 C10H16 C2H C5H8 None of these

Q: A chemical compound containing only carbon, hydrogen and oxygen is found t composed of 57.43% C and…

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

Q: An unknown compound contains only CC , HH , and OO . Combustion of 2.90 g2.90 g of this compound…

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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: grams

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Q: A 0.125 g sample of unknown hydrocarbon is prepared for combustion analysis. After the hydrocarbon…

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Q: Consider the following reaction of K2S2O3 for neutralizing chlorine in industrial bleaching. K2S2O3…

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Q: 3CO2 + 6H2O -> 6O2 + C6H12O6 1a. Carbon dioxide and water combine in the presence of sunlight (and…

A: Given reaction  3CO2 + 6H2O → 6O2 + C6H12O6 Initially  amount of CO2 = 75.6 gm moles of CO2 = 75.644…

Q: Please answer the 2 questions: 1) How many 35 mg aspirin tablets can be made from 35.0 kg of…

A: Molar mass of SO2 = 64 g/mol Molar mass of SO3 = 80 g/mol actual yield of SO3 = 15.2 g

Q: What is the molecular formula of a substance that contains 2.64 g of C, 0.444 g of H, and 3.52 g of…

A: Given : Molecular mass of compound = 60.05 g/mol Mass of C = 2.64 g Mass of H = 0.444 g Mass of O =…

Q: A 0.4842-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in…

A: mass of sample = 0.4842 gmass of CO2 = 0.8635 gmass of H2O = 0.3533 gmolar mass of CO2 = 44.01…

Q: are the balanced chemical equations for the following? 1. BaCl2 & Na2CO3 2. CuSO4 & Pb(NO3)2 3.…

A: The chemical reactions follow the stoichiometry of the reactants and the products.For balancing a…

Q: How many hydrogen atoms are in 5.0 g of citric acid (CóHg87)? O 1.6 x 10²² Hydrogen atoms O 4.6 ×…

A: Mass of Citric Acid = 5.0 gMolar mass of Citric Acid = 192.124 g/moleMoles of Citric Acid = Mass of…

Q: 2 KClO3              2 KCl + 3O2 How many grams of O2 will be formed from 3.76 grams of KClO3

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Q: 8. A 10.00 g sample of a compound that consists of carbon and hydrogen is found to consist of 7.99 g…

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Q: The molecular weight of an unknown hydrocarbon is 208.29. The compound is found to be composed of…

A: We have to find chemical molecular formula. Given, Percentage composition of C,H and O are…

Q: quation below what is the mole ratio between O2 and CO2? + 8 O2 (g) → 6 H2O (g) + 5 CO2 (g) =8 =5 CO

A: A mole ratio is a conversion factor.  It  relates moles of any two substances in a chemical…

Q: How many g of H2O can be formed from 6.50 g CH4?  CH4  +  2 O2  ----->CO2 +  2 H2O

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Q: Determine the molecular weight in ethyl alcohol (C2H6O)

A: The constituent atoms present in ethyl alcohol (C2H6O) are carbon, hydrogen, and oxygen. The atomic…

Q: N₂(g) + 3 H₂(g) 2 NH3(g) How many grams of ammonia can I produce from 0.995 grams of hydrogen gas? O…

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Q: An unknown compound contains only C, H, and O. Combustion of 7.00 g of this compound produced 15.9 g…

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Q: B. If 4.04 g N combine with 11.46 g O to the molecular formula (MF) of this ce 9. A compound with a…

A: Mass of N = 4.04 g Mole of N = 4.04/14 = 0.289 mol Mass of O = 11.46 g Mole of O = 11.46/16 = 0.716…

Q: What mass in grams of KCl (74.55 g/mol) is produced from 38.7 grams of KClO3 (122.55 g/mol) if the…

A: For the reaction : 2 KClO3 → 2 KCl + 3 O2 2 mol             2 mol     3 mol 2 mol of KCl is produced…

Q: A 3.000g sample of lead (207.2 g/mol) was completely reacted with excess oxygen (16 g/mol) in a…

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Q: Consider the following hypothetical equation.  A2B3 +  3 C2D --> A2D3 + 3 C2B OR A2 B3 + 3 C2 D…

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Q: How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7 g Fe? Fe2O3(s) +…

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Q: Which contains the greatest mass of oxygen?   0.75 mol of ethanol (2C H5 OH)   1.0 mol of water…

A: Which contains the greatest mass of oxygen?

Q: If you have 25 grams of lactic acid (C3H6O3), how many moles of lactic acid molecules do you have?

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Q: Consider the following reaction where K. = 34.5 at 1150 K. 250,(g) + O,(3)=2503(3) A reaction…

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Q: What is the mass in grams of NO that can be formed from 3.22 moles of NO2 in the reaction below?…

A: The answer is given as follows

Q: If 2.112g of Fe2O3 reacts with 0.687 of Al, how much pure Fe will be produced? Fe2O3 (s) + 2 Al (s)…

A: The given reaction is shown below. The given weight of Fe2O3 is 2.112 g. The given weight of Al is…

Q: Consider the following hypothetical equation.  A2B3 +  3 C2D --> A2D3 + 3 C2B OR A2 B3 + 3 C2 D…

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Q: Consider the following reaction: 2 K(s) + S(s) + 2 O2(g) --> K2SO4(s) If you start off with…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: If exactly 3 moles of propanol (C3H8O) is combusted in the presence of excess oxygen (molecular…

A: The combustion reaction of propanol is expressed as, 2C3H8O+9O2→6CO2+8H2O......(1)

Q: How many moles of carbon dioxide will be produced from the combustion of exactly 2 moles of C5H12?

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Q: How many grams of N2F4 can theoretically be prepared from 4.00g of NH3 and 14.0g of F2? The chemical…

A: The chemical reaction :  2NH3(g) + 5F2(g)  ---> N2F4(g) + 6HF(g)  Mass of NH3 = 4.00 g  Mass of…

Q: A 2.05 g sample of an unknown compound contains H, S, and O. If the compound contains 0.050 gH and…

A: 3rd option is correct that is 58.5%

Q: A compound contains 39.0 % C, 6.72 % H and 53.4 % O by mass. a) What is its empirical formula? b)…

A: Given:  A compound contains 39.0 % C, 6.72 % H and 53.4 % O by mass which means that 100 g of 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.