The mass of Li2O : 104.58 grams
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Further explanation
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Given
3.5 moles of Li2O
Required
The mass
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
mol(n) = mass(m) : MW(molecular weight)
Input the value :
mass = mol x MW Li2O
mass = 3.5 mol x 29,88 g/mol
mass = 104.58 g grams
mass = 2.957 g
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i think i dont know
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The movement of substances may occur across a semi‐permeable membrane (such as the plasma membrane). A semi‐permeable membrane allows some substances to pass through, but not others.
Explanation: