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VgCarlos3787
14.02.2020 •
Chemistry
What volume of a 0.88 M solution can be made using 130. Grams of FeCI^2?
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Ответ:
1.16L can be made
Explanation:
Molarity = Mol / Volume
Volume = Mol / Molarity
Let's determine the moles of salt, with that mass:
130 g FeCl₂ . 1mol / 126.75 g = 1.02 moles of FeCl₂
Volume = 1.02 mol / 0.88 mol/L → 1.16L
Ответ:
Three (3) => 2Na⁺ and 1SO₄²⁻
Explanation:
Na₂SO₄ => 2Na⁺ + SO₄²⁻
Note: one can easily determine the cation-anion separation during aqueous ionization if one reads the formula left to right => place an imaginary line after the 1st metal of the molecular formula => left of line is cation and right of line anion.
Na₂SO₄ => Na₂ | SO₄ => 2Na⁺ + SO₄²⁻ (3 ions)
CaCO₃ => Ca | CO₃ => Ca₂⁺ + CO₃²⁻ (2 ions)
Ni(NO₃)₂ => Ni | (NO₃)₂ => Ni²⁺ + 2NO₃⁻ (3 ions)
Ca₃(PO₄)₂ => Ca₃ | (PO₄)₂ => 3Ca²⁺ + 2PO₄³⁻ (5 ions)