Question

Transforme as massas das substâncias em valores de n° de mol .

a) 880 g de CO2 =

b) 510 g de NH3 =

c) 9 g de C6H12O6 =

d) 800 g de CaCO3

e) 490 g de H3PO4 =

f) 2 g de H2O =

g) 1,2 Kg de C2H6O =

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Answer 1

Resposta:

a) 880 g de CO2 =  20,0 mol

b) 510 g de NH3 = 30,0 mol

c) 9 g de C6H12O6 =  0,05 mol

d) 800 g de CaCO3  = 8,0 mol

e) 490 g de H3PO4 = 5,0 mol

f) 2 g de H2O =  0,111 mol

g) 1,2 kg de C2H6O =  26,0 mol

Explicação:

a) 880 g de CO2 = 880,0 g / 44,0 g/mol = 20,0 mol

b) 510 g de NH3 =  510,0 g / 17,0g/mol = 30,0 mol

c) 9 g de C6H12O6 =  9,0 g / 180 g/mol = 0,05 mol

d) 800 g de CaCO3  = 800,0 g / 100 g/mol = 8,0 mol

e) 490 g de H3PO4 =  490,0 g / 98,0 g/mol =5,0 mol

f) 2 g de H2O =  2,0 g / 18,0 g/mol = 0,111 mol

g) 1,2 kg de C2H6O =  1,2 kg / 46,0 g/mol = 0,026 k.mol = 26,0 mol