how many oxygen atoms are present in calcium oxide?
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1 calcium, 2 oxygen and 2 hydrogen makes for a total of 5 atoms in 1 molecule.
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Calcium has 2 valence electrons. You can see that there are 2 electrons in the outer energy level and these are the valence electrons.
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Calcium, Ca It has two electrons in its outer shell. When these electrons are lost, a calcium ion, Ca 2+, is formed. A calcium ion has the same electronic structure as an argon atom (Ar).
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Answer. firstly we find the mole of CaCO3 . Now, in CaCO3 1 mol CaCO3 contains 3 mol O . Hence, 36.138*10^23 atoms of oxygen are present in 200 g of caco3.
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There are eight oxygen atoms in the above formula: Ca3(PO4)2 C a 3 ( P O 4 ) 2 .
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How many atoms are present in one formula unit of calcium hydrogen carbonate Ca(HCO3)2? Could someone explain to me why the answer is 11? Thank you. It has 1 Calcium atom (Ca), 2 Hydrogen atoms (H), 2 carbon atoms (C) and 6 Oxygen atoms (O).
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Calcium carbonate is CaCO₃. In total, five atoms in this molecule.
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200 g of calcium carbonate contains oxygen atoms = 200*3*6.022*1023/100. firstly we find the mole of CaCO3 . Now, in CaCO3 1 mol CaCO3 contains 3 mol O . Hence, 36.138*10^23 atoms of oxygen are present in 200 g of caco3.
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This compound's formula is Ca(NO3)2. There is one calcium atom, two nitrogen atoms, and there are six oxygen atoms in calcium nitrate.
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Calcium Nitrate is made up of three different elements and contains a total of nine atoms. This compound's formula is Ca(NO3)2. There is one calcium atom, two nitrogen atoms, and there are six oxygen atoms in calcium nitrate.
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An oxide (/ˈɒksaɪd/) is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula. "Oxide" itself is the dianion of oxygen, an O2– atom.
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As you can see, oxygen has 2 of its 8 electrons in the shell closest to the nucleus, and the remaining 6 electrons - which are called valence electrons - in its second shell - this is oxygen's outermost shell. In order to complete its octet, it needs 8 electrons in its outermost shell.
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Calcium's atomic mass is 40.08amu or 40.08 grams per mole. One mole of calcium contains 6.02 x 10 to the 23rd power(6.02e23) atoms. Take 0.6 grams and divide by 40.08 grams (0.0150) and multiply this factor by 6.02e23. That gives you 3.61e23 atoms.
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Calcium, Ca Calcium is also in Group 2. It has two electrons in its outer shell. When these electrons are lost, a calcium ion, Ca 2+, is formed. A calcium ion has the same electronic structure as an argon atom (Ar).
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Calcium (Ca) is a metal element located in group 2 of the periodic table, and oxygen (O) is a nonmetal element located in group 16. When these two elements chemically combine, they form an ionic compound. This type of compound is made when atoms form ionic bonds.
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So, 2moles of O2 contains 2× 6.023×10^23 molecule= 12.046 ×10^23 molecule . Now, 1 molecule of oxygen contains 2 atoms. Hence, 2mole of O2 contains 2 ×2 ×6.023 ×10^23 atoms = 24. 092 ×10^23 atoms.
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In calcium carbonate, we have one atom of calcium, one of carbon and three of oxygen.