estimate how many electrons there are in your body?
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Thus, in the average human body, there will be 50000 g/ 12 g = 4167 packets of 12 g of carbon each, i.e. 25002 x 10^23 atoms, or, expressed more conventionally, 2.5 x 10^27 atoms. Each of these has six electrons. I.e. the average human body contains about 1.5 x 10^28 electrons.
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According to the US Department of Energy's Jefferson Lab, the answer is: 133,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000. That answer comes from an estimation of the number of atoms in each of Earth's elements, like Iron, Oxygen, Silicon, Magnesium, Sulfur … etc.
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66. How many protons and electrons are contained in an atom of element 44? element 44 = atomic # 44 44 protons 44 electrons.
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Subtract the charge from the atomic number if the ion is positive. If the charge is positive, the ion has lost electrons. To determine how many electrons are left, subtract the amount of charge from the atomic number. In this case, there are more protons than electrons.
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Answers and Replies Take the total charge... 2.2*10^7C... and divide by charge/electron = 1.6*10^-19C/electron. That gives you the number of electrons.
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One mole of anything is 6.022 x 10^23 particles. That's what a mole is and 6.022 x 10^23 is the Avogadro number. So, 1 mole of electrons is 6.022 x 10^23 electrons.
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The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.
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With some judicious guesses as to the average molar masses, we can calculate the number of molecules. So, your body consists of 1.2×1027 molecules, and more than 99 % of them are water molecules.
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Label each shell as n=1, n=2, etc. The first shell holds 2 electrons. We have 18 electrons left.
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The M shell only holds eight electrons. The M shell can actually hold up to 18 electrons as you move to higher atomic numbers.
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['The number of protons in the nucleus of the atom is equal to the atomic number (Z).', 'The number of electrons in a neutral atom is equal to the number of protons.']
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Answer Expert Verified Then, the number outer-shell d electrons is 4.
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Mass of an electron= 9.1 x 10^-31 Kg. Avagadro Number=6.022 x^10^23. =1.825 x 10^6 moles of electrons. So 1Kg of electrons contain 1.825 x10^6 moles of electrons.
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Key Takeaways. The number of atoms per human cell is only a rough estimate because cells come in different sizes. 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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The number of electrons in a charge is the ratio of total charge to the charge of each electron. The formula for number of electrons is, Here, n is the number of electrons, q is the total charge and e is the charge of electron.
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The result is that about 45% of the mass of the human body is due to neutrons, 55% is protons (0.027% is electrons). An average human weights around 80 kg, so there are 36 kg of neutrons. Each neutron weighs 1.675 E-27 kg. So there are 36/1.675 E-27 = 2.15 E28 neutrons in a human 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.