about how many atoms are there in your 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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The number of protons in an atom of an element is its atomic number . Remember that: all atoms of a given element have the same number of protons. atoms of different elements have different numbers of protons.
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Almost 50% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.
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In other words: The human body consists of some 37.2 trillion cells. For a long time, scientific estimates of the number of cells in the human body ranged between 1012 and 1016.
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The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. 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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However, at the most basic level, your body—and, in fact, all of life, as well as the nonliving world—is made up of atoms, often organized into larger structures called molecules. Atoms and molecules follow the rules of chemistry and physics, even when they're part of a complex, living, breathing being.
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The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.
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One mole of atoms contains 6 x 10 23 atoms, no matter what element it is. This is a very large number: it is 6 with 23 zeros after it. It is known as the Avogadro number. This number is used in chemistry because if you could count out this many carbon atoms, the total mass of carbon you would have is 12 g.
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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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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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The number of molecules is therefore 6.022*1023 * 55.556 = 3.346*1025 molecules. The number of atoms is 3 times larger because each molecule has three atoms, so there are 1.0038*1026 atoms in a liter of water. Now we know enough to answer your question. A typical human head weighs about 10 - 12 pounds.
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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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Roughly 96% of the mass of the human body is made up of just four elements: oxygen, carbon, hydrogen and nitrogen, with a lot of that in the form of water. Are we breathing less than 50% of oxygen? How much oxygen is in our blood? What percent of oxygen does our body absorb during inhalation?
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In other words, 1 mole of atoms is 6.02×1023 atoms. 1 mole of molecules is 6.02×1023 molecules.
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Structure of the Atom. The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. 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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Atoms. Atoms are everywhere! They make up everything around us and are the building blocks of life. They are made up of three different particles - protons, neutrons, and electrons.
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Fraction of a mole * Atomic weight = weight or mass you have Now we have to get what fraction of a mole you have. To start, you need know that all a mole means is you have 6.022 x 1023 atoms of that type. So if I tell you I have a mole of nitrogen, then I have 6.022 x1023 nitrogen atoms.