One volume of a compound of carbon, hydrogen and oxygen was exploded with 2. The gas oxygen that is in the "air" has the formula O 2. The empirical formula of glucose is therefore CH 2 O, but what is its molecular formula? Oxygen has an atomic mass of 16 gram per mole. That means that there are two atoms of oxygen. What is the chemical formula for each of the reactants? Step 4: Write the number of of carbon atoms into the skeleton molecular formula as a subscript number to the right of the symbol for carbon (C). Oxygen is necessary in sustaining life and considered as a precious gem since it cannot be found in space. The ratio between carbon and oxygen is 1:2.The elements present in this compound are carbon and oxygen. What’s the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65.0% oxygen? Therefore, the empirical formula is C 4 H 8 O. The resultant mixture contained 2 volumes of water vapour and 2 volumes of carbon dioxide. Chemistry The Mole Concept Percent Composition 1 Answer We can write an equation for this reaction: The plus sign indicates that carbon and oxygen react, and the arrow, usually read as “yields,” points to the result of their reaction: carbon … Carbon dioxide is made of carbon and oxygen atoms. If we start with: [math]CO^- + O_2 -> CO_2[/math] The balanced equation will be: [math]2CO^- + O_2 -> 2CO_2[/math] So one mole of O 2 weights : 2 x 16 = 32 grams A. C2 and O B. C2 and O2 C. C and O2 D. CO2 and O2 Carbon and oxygen bond to form carbon dioxide. The atomic mass of carbon is 12 grams per mole. The empirical formula of the given compound. The chemical formula of it is CO2. For the reaction of carbon with a plentiful source of oxygen, as we have noted, the sole product is carbon dioxide. The formula for carbon dioxide is CO 2, that means one atom of carbon and two atoms of oxygen. C H O . The oxygen:carbon ratio is 1.018, or approximately 1, and the hydrogen:carbon ratio is approximately 2. Step 4: We can write the empirical formula by placing the numbers as the subscript to the element’s symbols. Calculation: - Let the mass of the compound be 100 gm. Step 2: Write a skeleton molecular formula using the symbols for carbon (C), hydrogen (H) and oxygen (O). However, based on the studies, molecular oxygen … 5 volumes of oxygen. All volumes were measured in identical conditions. Thus, the mole ratio of carbon to oxygen and hydrogen to oxygen is 4 : 1 and 8 : 1. Determine the formula of the compound. 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