Question

Find the ratio by mass of CaCl₂

Answer 1

molar mass of CaCl2 = 40+35.5×2
= 40+71
= 111
ratio mass = 111/2
= 55.5

Answer 2

HEY MATE!!

Atomic mass of Ca (Calcium) + ( 2 × atomic mass of Cl ( Chlorine)

Ca = 40

Cl = 35.5

= 40 + 2 × 35.5

= 40 + 71

= 111u

Ratio by mass = 111u / 2

55.5

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