how many atoms are in 1.54 moles of bromine (br)?
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Explanation: And thus in 1.54 moles of bromine, there are 2×1.54⋅mol×6.022×1023⋅mol−1≅18×1023 bromine atoms .
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Originally Answered: How many atoms are there in one element? It depends on the atomic mass of the particular element. Atomic mass of element= 1 mole of the element = 6.022 x 10^23 atoms of that element.
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Since we know that there are 6.022⋅1023 atoms in every mole of a substance (Avogadro's Number), there are 6.022E23⋅0.750 atoms of Zn in 0.750 mols of Zn.
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For phosphorous or any chemical compound, a mole contains 6.022⋅1023 molecules in it. So if you have 1.20⋅1025 (that's what I assume you meant) atoms of phosphorous, then just divide by Avogadro's number to find the number of moles.
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A mole contains 6.022 × 10 23molecules, but each molecule of chlorine gas contains two atoms. A mole is one gram molecular weight. In 1 mole chlorine there are 2 chlorine atoms.
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A mole of a compound will have 6.02 x 10^23 molecules, so the number of atoms in a mole is 6.02 x 10^23 x number of atoms in a molecule. One Molecule of Ca(OH)2 has 5 atoms. Therefore, one mole of Ca(OH)2 has 6.022 x10^23 x 5 = 30.11 x 10^23 atoms.
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If you have a mole of cl2, then you have 6.02 * 10^23 molecules of cl2. If you want to calculate for atoms however, you can see that each molecule has two atoms of cl. Therefore you have 2* 6.02 * 10^23 chlorine atoms.
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How many atoms are in 6.2 moles of aluminum? I mol = 6.02X1023 atoms so 6.2 mol = 6.2x (6.02x1025) = 3.73 x1024 atoms of Al.
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( 1/4 of a mole) x (6.02 x 1023 atoms/mole) = approximately 1.5 x 1023 atoms. If you have a compound like H2O, then: one mole of water contains 6.02 x 1023 MOLECULES of water.
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Since 1 mole of silicon contains 6.023 x 10^23 atoms, 4 moles will contain: (4 moles) x (6.023 x 10^23 atoms) = 2.4092 x 10^24 atoms. Thus, 4 moles of the silicon element contains about 2.4 x 10^24 atoms.
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One mole of a substance is defined by Avogadro as consisting of 6.022 x 1023 atoms. This is Avogadro's number. To calculate the number of atoms in two moles of sodium, use dimensional analysis. 2.0 moles Na x 6.022⋅1023g1mol=1.20⋅1024 atoms of Na.
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TL;DR: A bromine atom has 35 protons, 45 neutrons, and 35 electrons.
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One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro's number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole). The molar mass of any element can be determined by finding the atomic mass of the element on the periodic table.
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Answer and Explanation: A bromine (Br) atom has 7 valence electrons.
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So, bromine is located in period 4, group 17 of the periodic table and has an atomic number equal to 35 . This tells you that a neutral bromine atom has a total of 35 electrons surrounding its nucleus. Notice that bromine's outermost electrons, i.e. its valence electrons, are located on the fourth energy level, n=4 .
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How many atoms are in 3.5 moles of arsenic atoms? 2.1 x 1024 atoms.
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If we have 2 mol of Na atoms, we have 2 × (6.022 × 10 23) Na atoms, or 1.2044 × 10 24 Na atoms. Similarly, if we have 0.5 mol of benzene (C 6H 6) molecules, we have 0.5 × (6.022 × 10 23) C 6H 6 molecules, or 3.011 × 10 23 C 6H 6 molecules. A mole represents a very large number!