Estimate the number of electrons in 100 g of water . How much is the total negative charge on this electrons .
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moles = given mass / molecular mass
so, moles of water = 100/18
moles of water = 5.555 moles
no. of molecules in 1 moles = 6.022 × 10^23
no. of molecules in 5.555 moles = 6.022 × 10^23 ×5.555 = 3.345 × 10^24 molecules
no. of electrons on 1 molecule of H20 = 10 electrons
no. of electrons in 3.345 × 10^24 molecules of water = 3.345 × 10^25 electrons
charge of the(1) electron is -1.602 x 10-19 C
so, charge of 3.345 × 10^25 electrons will be ---
-1.602 x 10-19× 3.345 × 10^25 C
hope this helps and please mark my answer as brainliest.....
so, moles of water = 100/18
moles of water = 5.555 moles
no. of molecules in 1 moles = 6.022 × 10^23
no. of molecules in 5.555 moles = 6.022 × 10^23 ×5.555 = 3.345 × 10^24 molecules
no. of electrons on 1 molecule of H20 = 10 electrons
no. of electrons in 3.345 × 10^24 molecules of water = 3.345 × 10^25 electrons
charge of the(1) electron is -1.602 x 10-19 C
so, charge of 3.345 × 10^25 electrons will be ---
-1.602 x 10-19× 3.345 × 10^25 C
hope this helps and please mark my answer as brainliest.....
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