2 years ago

After moving down a group in the periodic table, the number of valence electrons

Chemistry

1 answer:

Delvig [45]2 years ago

8 0

the number of Valence electrons remains the same

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Mass of CaCl₂ = 0.732 g

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

$\tt \%(m/v)\rightarrow 12\%=\dfrac{mass~CaCl_2}{volume~of~solution}\times 100\%\\\\mass~CaCl_2=12\%\times 6.1\div 100\%\\\\mass~CaCl_2=0.732~g$

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12% NaCl is the answer I came to... Have a GREAT day!!! :)

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