How many grams is 6.511 mol tungsten (V) dichromate?
回答 (1)
2016-10-18 4:15 pm
The formula of tungsten(V) dichromate is W₂(Cr₂O₇)₂.
Molar mass of W₂(Cr₂O₇)₅ = (183.9×2 + 52.0×10 + 16.0×35) g/mol = 1447.8 g/mol
Mass of 6.511 mol of W₂(Cr₂O₇)₅ = (1447.8 g/mol) × (6.511 mol) = 9427 g (to 4 sig. fig.)
Molar mass of W₂(Cr₂O₇)₅ = (183.9×2 + 52.0×10 + 16.0×35) g/mol = 1447.8 g/mol
Mass of 6.511 mol of W₂(Cr₂O₇)₅ = (1447.8 g/mol) × (6.511 mol) = 9427 g (to 4 sig. fig.)
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