A compound that is composed of carbon, hydrogen, and oxygen contains 70.6% C, 5.9% H, and 23.5% O by mass. The molecular weight of the compound is 136 amu. What is the molecular formula? Group of answer choices C8H4O C9H12O C5H6O2 C8H8O2 C4H4O

Q: 21. A compound contains 70.6% carbon, 5.9% H, and 23.5% O by mass. The molecular weight of this…

A: Molecular formula of a compound tells the number of different atoms present in the compound.…

Q: 2. What weight of As2O3 and of CuO are equivalent to 1.000 g Paris green, Cu3(AsO3)2.Cu(C2H3O2)2 (…

A: One molecule of Paris green contains two atoms of As and four atoms of Cu. So, Moles of As2O3 = 14 x…

Q: What is the percent by mass of H in isobutyl benzene (C10H14)? The molecular weight of carbon is…

A: Given values: The molecular weight of carbon is 12.0107 g/mol. The molecular weight of hydrogen is…

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: A compound is composed of carbon, hydrogen, and oxygen. When 10.0 g of an unknown compound was…

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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: 3 A + 2 B --> A2B3 OR 3 A + 2 B right arrow A2B3 The atomic weight of A is 25.0 g/mol The atomic…

A: First we have to find out the limiting reagent. The limiting reagent is the reactant that gets…

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: Use the following chemical equation   C6H12 + 9 O2 ----> 6 CO2 + 6 H2O (OR C6H12 + 9 O2 right arrow…

A: Given reaction: C6H12 + 9 O2 → 6 CO2 + 6 H2O We have to calculate the mass of CO2 that can be…

Q: A compound was analyzed and found to contain 66.68% C, 11.11% H, 22.22% O If the molar mass is 144.…

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Q: what is the empirical formula of a compound that is 37% element x (X), 46% spice (sp), and the rest…

A: Introduction:  We have to calculate emperical formula of the compound .

Q: How many grams of NH3 can be produced from 40.0 grams of CaCN2? CACN2 + 3H20 CACO3 + 2 NH3

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Q: Use the following chemical equation   C6H12 + 9 O2 ----> 6 CO2 + 6 H2O (OR C6H12 + 9 O2 right arrow…

A: The balanced reaction taking place is given as, => C6H12 + 9 O2 ----> 6 CO2 + 6 H2O Given:…

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: How many atoms of carbon and how many grams of carbon are there in 5 molmol of each of the following…

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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: Combustion analysis of 60.0 grams of a C, H and O containing compound produced 161.41 grams of…

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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: Determine the amount, in mol, of each compound present in the sample based on the mass and molecular…

A: To convert mass in grams to mol, the molar mass of the given substance is required. Then, the molar…

Q: Give 4.5 moles of Cr and 6.0 moles of N2, how many grams of Cr2N3 (MW 146 g/mol) can be formed?…

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Q: What is the coefficient in front of the O₂ when the equation below is balanced (using only whole…

A: Write coefficient of O2 in the given reaction after balancing ?

Q: Furnace H20 absorber CO2 absorber Sample When 3.366 grams of a hydrocarbon, C,H,, were burned in a…

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Q: Aspirin, C9H8O4, is a common pain reliever and is also often given in low doses daily for prevention…

A: Given :- number of moles of aspirin (C9H8O4) in sample = 0.0745 mol  To calculate :- mass of aspirin…

Q: If there are 3.60 moles of H, how many moles of each of the compounds are present? H₂SO4 C₂H4O₂ NaOH…

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Q: 4 A compound is 64.9% carbon, 13.5% hydrogen and 21.6% oxygen. Its molecuia mass is 74 g/mol. What…

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Q: 2.050 g of an unknown sample contains H, S, and O. If the compound contains 0.0500 gHand 0.800 g of…

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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.