Question

calculate the number of calcium and carbonate ion in 50g in caco3​

Answer 1

Answer:

M.wt of CaCO

3

=100

number of moles of CaCO_3 present in 50gm =

100

50

=0.5

1 mole of CaCO

3

= 3 moles of O

2

0.5 moles of CaCO

3

has 1.5 moles of oxygen.

1mole=6.022∗10

23

particles

∴ 50g of CaCO

3

=1.5∗(6.022∗10

23

)=9.035∗10

23

oxygen atoms.

Explanation:

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Answer 2

Explanation:

molar mass of CaCO3 = 100 u

moles of calcium carbonate = 50/100 = 0.5

in 1 mole calcium carbonate, 1 mole Ca is present

in 0.5 mole , Ca = 0.5 mole

1 mole Ca = 6.022*10^23 atoms ofcalcium

0.5moles Ca = 3.011*10^23 calcium

similarly, CO3 2- = 3.011*10^23 ions