how many hydrogen atoms are there ethane?
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Ethane contains two carbon atoms and four hydrogen atoms.
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Notice how the "moles of C2H6" can cancel, giving you your answer: 12 moles of hydrogen.
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In this case, the periodic table tells us there is 1g of hydrogen per mole. We know that dihydrogen (H2) has 2 hydrogen atoms per molecule, so there will be 2 * 1g hydrogen per mole = 2g dihydrogen per mole.
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As one mole of H2 contains 6.022×10^23 molecules of H2. And one molecule contain 2 Hydrogen atoms.
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1 Answer. The number of hydrogen atoms is 32 . The formula for an acyclic alkane with 15 carbon atoms is C15H32 .
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(ii) Number of moles of hydrogen atoms. (iii) Number of molecules of ethane. Answer (i) There are two atoms of Carbon in each C2H6 molecules hence 1 mole of C2H6 will have 2 moles of carbon atoms.
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A molecule of methane contains four hydrogen atoms and one carbon atom. It has the formula CH4. In some elements, small numbers of atoms of the same kind combine together to form a molecule. For example, oxygen in air is made up of molecules that contain two oxygen atoms.
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Ethane is another example of a simple hydrocarbon. Ethane contains two carbon atoms and four hydrogen atoms. In chemistry we use a molecular formula to show how many atoms of each element are present in a molecule.
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1 water molecule = 2 Hydrogen atoms + 1 oxygen atom. So, 1 mole H2O = 1.2044×10^24 hydrogen atoms. Therefore 2 mole H2O will have 2.4088×10^24 hydrogen atoms.
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The propane molecule has three carbon atoms and eight hydrogen atoms (C3H8), from which a general chemical formula can be derived; CnH2n+2.
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Therefore 5 molecules of water have 10 hydrogen atoms. Water is H2O so 5 Moles of water contains; 2 x 5 x 6.022140857 × 10^23 atoms of Hydrogen !
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There are two atoms of hydrogen in each molecule of water.
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As one mole of H2 contains 6.022×10^23 molecules of H2. And one molecule contain 2 Hydrogen atoms. So, 1 mole of H2 will have 1.2044×10^24 atoms.
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There are hydrogen atoms in 25 molecules of C4H4S2. Explanation: The formula of C4H4S2 indicates that there are 4 hydrogen atoms per molecule and hence 100 hydrogen atoms in 25 molecules of C4H4S2.
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The first step in drawing the Lewis dot structure for ethane ( C2H6 ) is to determine how many valence electrons are available for the molecule. This means that the Lewis dot structure for C2H6 must account for 14 valence electrons, either through bonding between atoms, or through lone pairs.
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Answer and Explanation: There are 48.176 X 1023 hydrogen atoms in 2.0 moles of CH4. This is also the equivalent of eight moles of hydrogen atoms. We can calculate the number...
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For example, the molecular formula of butene, C4H8, shows that each freely existing molecule of butene contains four atoms of carbon and eight atoms of hydrogen. Its empirical formula is CH2. One molecule of ethylene (molecular formula C2H4) contains two atoms of carbon and four atoms of hydrogen.