The label in the picture is part of the trademark of a certain "calcium-iodized salt" packaging bag. The calcium content on the trademark refers to ______ (optional "elementary calcium", "calcium carb

The calcium content on the packaging label refers to the content of calcium element;

So fill in: calcium element;

Suppose the mass of calcium carbonate in 10g of this calcium-fortified table salt is x,

CaCO3 2HCl═CaCl2 H2O CO2↑ 100?44 x?0.132g? 100x=440.132g

x=0.3g

10g is added The mass fraction of calcium in calcium salt is: 0.3g×40100×100=0.12g

The mass fraction of calcium in this calcium-fortified salt=0.12g10g×100=1.2

Answer : The mass fraction of calcium in this calcium-fortified table salt is 1.2.

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