look up the density of ethylenediamine. calculate the number of grams and number of moles in 3.3 mL of ethylenediamine.?
回答 (1)
2016-11-02 2:26 am
From Wikipedia :
Density of ethylenediamine = 0.90 g/mL
Molar mass = 60.10 g/mol
Mass of ethylenediamine = Density × Volume = (0.90 g/mL) × (3.3 mL) = 3.0 g (2 sig. fig.)
No. of moles of ethylenediamine = (3.0 g) / (60.10 g/mol) = 0.050 mol (2 sig. fig.)
Density of ethylenediamine = 0.90 g/mL
Molar mass = 60.10 g/mol
Mass of ethylenediamine = Density × Volume = (0.90 g/mL) × (3.3 mL) = 3.0 g (2 sig. fig.)
No. of moles of ethylenediamine = (3.0 g) / (60.10 g/mol) = 0.050 mol (2 sig. fig.)
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