Density = mass / volume
Substitute
And is 7.80555 g/cm cube
Answer:
Four Ca²⁺ and eight Cl⁻ ions.
Explanation:
If
0.20 mol·L⁻¹ NaCl = 8Na⁺ + 8Cl⁻
Then
0.10 mol·L⁻¹ NaCl = 4Na⁺ + 4Cl⁻
And
0.10 mol·L⁻¹ CaCl₂ = 4Ca²⁺ + 8Cl⁻
The square will contain 4 Ca²⁺ ions and 8 Cl⁻ ions.
It should resemble the diagram below
<span>KOH(aq) + Fe(NO3)3 --> KNO3(aq) + Fe(OH)3(s)
</span>Yes, a chemical reaction will occur
Answer:
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