What is mole concept. Calculate the number of molecules in 45g of water.
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As of 2011, the mole is defined by International Bureau of Weights and Measures to be the amount of substance of a system which contains the same number of constitutive entities (e.g. atoms, molecules, ions, electrons, photons) as atoms in 0.012 kilograms of carbon-12 (12C), the isotope of carbon with standard atomic weight 12.
18g of water contains 6×10^23 molecules
45g of water contains 6×10^23×45÷18 molecules.....
=15×10^23 molecules
18g of water contains 6×10^23 molecules
45g of water contains 6×10^23×45÷18 molecules.....
=15×10^23 molecules
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water =H2O
1×2+16
2+16
18g
18g of water =1atom
1g of water =1/18
45g of water =1/18×45
=2.5atom
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1×2+16
2+16
18g
18g of water =1atom
1g of water =1/18
45g of water =1/18×45
=2.5atom
please mark me as brain list
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