how many atoms are in the known universe?
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The universe is vast. Scientists estimate there are 1080 atoms in the universe. Since we can't go out and count each particle, the number of atoms in the universe is an estimate. It is a calculated value and not just some random, made-up number.
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There are 92 naturally occurring elements, each differing from the others in the number of protons and electrons in its atoms. Living organisms, however, are made of only a small selection of these elements, four of which—carbon (C), hydrogen (H), nitrogen (N), and oxygen (O)—make up 96.5% of an organism's weight.
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Answer Expert Verified The answer is A. 1.5 × 1024 atoms Au.
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Chegg.com. The total number of atoms present in a molecule can be obtained by adding together all the atoms present in the molecule. In this case contains 3 calcium, 2 phosphorus and 8 oxygen atoms. So, in total 13 atoms are present in this molecule.
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Scientists estimate the average cell contains 100 trillion atoms. The number of atoms per cell is about the same as the number of cells in the body.
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In summary, for a typical human of 70 kg, there are almost 7*1027 atoms (that's a 7 followed by 27 zeros!) Another way of saying this is "seven billion billion billion." Of this, almost 2/3 is hydrogen, 1/4 is oxygen, and about 1/10 is carbon.
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Answer and Explanation: There are 10 3d electrons in an atom of each element.
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Since 2016, the periodic table has 118 confirmed elements, from element 1 (hydrogen) to 118 (oganesson). Elements 113, 115, 117 and 118, the most recent discoveries, were officially confirmed by the International Union of Pure and Applied Chemistry (IUPAC) in December 2015.
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The atomic number of an atom is the number of protons (and usually, the number of electrons) in the atom. The atomic mass of an atom is the total number of protons and neu- trons in the nucleus of the atom.
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The number 6.022 x 1023 is the value of the Avogadro's number. It is the number of particles or substance in one mole. For example, there are 6.022 x 1023 atoms in one mole of hydrogen.
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Avogadro's number states that one mole of any substance contains 6.022 * 1023 number of atoms. That means 1 mol of Helium, 1 mole of Copper, 1 mol of gold, and 1 mol of Aluminum, all contain 6.022 * 1023 number of atoms.
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To better define the unknown chemical space, we have enumerated 166.4 billion molecules of up to 17 atoms of C, N, O, S, and halogens forming the chemical universe database GDB-17, covering a size range containing many drugs and typical for lead compounds.
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For the (100) plane, there are 4 atoms at the 4 corners and one atom in the middle. One fourth of each corner atom is enclosed within the unit cell, and middle atom is entirely within the unit cell, so the number of atoms on the (100) plane within the unit cell is N100 = 4 × (1/4) + 1 × 1 = 2.
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A mole is equal to 6.022 X 1023 atoms or molecules, whichever is the primary unit used to create the mole.
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3atoms / molecule = 3 * 6.022*10^22 = 1.8*10^23 atoms.
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=7.8286 × 10^24. In 52 u of He 7.8286 × 10^24 atoms are present.
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of it will have 8*Avogadro's number of atoms. 5 mol. of it will have 5*8*Avogadro's number of atoms. = 2.4092 * 10^25 atoms.