Question

Determinar cuántas moles de Ca hay en 25gramos de CaCO3:



2,50moles de Ca


100,0moles de Ca


0,5 moles de Ca


0,25moles de Ca

Answer 1

Mm CcCO3 = 100 g/mol
n Ca = 50 g CaCO3  x  1 mol CaCO3  x    1 mol Ca                                     ````````````````````     ```````````````                                      100 g CacO3      1 mol CaCO3
n Ca = 0.5 moles