Calcule los gramos de soluto de las soluciones sig.....? 2.5 L de K2CrO4 0.75M.
Mm K2CrO4 = 194 g/mol
M = mol /V
mol = 2.5 L x 0.75 mol /L
mol = 1.88
mol = masa/Mm
masa = Mm x mol
masa = 194 g/mol x 1.88
masa = 364.72 g 75.2 mL de HC2H3O2 0.050M
V = 75.2 / 1000 = 0.0752 L
Mm = 60 g/mol
mol = 0.0752 L x 0.050 mol /L
mol = 0.00376
masa = 60 g/mol x 0.00376
masa = 0.2256 g 250 mL de HNO3 16M
V = 250 / 1000 = 0.250 L
Mm = 63 g/mol
mol = 0.250 L x 16 mol /L
mol = 4
masa = 63 g/mol x 4 mol
masa = 252 g cuantos mililitros de solucion de H3PO4 0.75 contiene lo sig. a) 0.15 mol de H3PO4
Mm H3PO4 = 98 g/mol
V = mol/M
V = 0.15 mol / 0.75 mol /L
V= 0.113 L B) 35.5 g de H3PO4
Mol = masa/Mm
Mol = 35.5 g/ 98 g/mol = 0.3622 mol
V= 0.3622 mol / 0.75 mol/L
V = 0.483 L
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Calcule los gramos de soluto de las soluciones sig.....?
2.5 L de K2CrO4 0.75M.
Mm K2CrO4 = 194 g/mol
M = mol /V
mol = 2.5 L x 0.75 mol /L
mol = 1.88
mol = masa/Mm
masa = Mm x mol
masa = 194 g/mol x 1.88
masa = 364.72 g
75.2 mL de HC2H3O2 0.050M
V = 75.2 / 1000 = 0.0752 L
Mm = 60 g/mol
M = mol /V
mol = 0.0752 L x 0.050 mol /L
mol = 0.00376
mol = masa/Mm
masa = Mm x mol
masa = 60 g/mol x 0.00376
masa = 0.2256 g
250 mL de HNO3 16M
V = 250 / 1000 = 0.250 L
Mm = 63 g/mol
M = mol /V
mol = 0.250 L x 16 mol /L
mol = 4
mol = masa/Mm
masa = Mm x mol
masa = 63 g/mol x 4 mol
masa = 252 g
cuantos mililitros de solucion de H3PO4 0.75 contiene lo sig.
a) 0.15 mol de H3PO4
Mm H3PO4 = 98 g/mol
M = mol /V
V = mol/M
V = 0.15 mol / 0.75 mol /L
V= 0.113 L
B) 35.5 g de H3PO4
Mol = masa/Mm
Mol = 35.5 g/ 98 g/mol = 0.3622 mol
V= 0.3622 mol / 0.75 mol/L
V = 0.483 L