3 ..............................
C. horizontal
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Answer:
B)3
Explanation:
I'm assuming the 2 is meant to be smaller. If it were a regular size 2 the answer would be 2 and that isn't an option
Answer:
1 gram
Explanation:
Half life = 25 years
Starting mass = 16 grams
Time = 100 years
Number of half lives = Time / Duration of Half life = 100 / 25 = 4
After first Half life;
Remaining mass = 16 / 2 = 8 g
After Second Half life;
Remaining mass = 8 / 2 = 4 g
After Third Half life;
Remaining mass = 4 / 2 = 2 g
After Fourth Half life;
Remaining mass = 2 / 2 = 1 g
The net ionic equation can be given as Sn²⁺ (aq) + S²⁻ (aq) → SnS (s).
<h3>What is an ionic equation?</h3>
The atoms or molecules on losing or gaining electrons in order to achieve the stable configuration results in the formation of positive or negative charge and are termed as ions.
The ionic equation can be given with the formation of the respective ions of the reactant and the product side.
SnSO₄ (aq) → Sn²⁺ (aq) + SO₄²⁻ (aq)
Na₂S (aq) → 2 Na⁺ (aq) + S²⁻ (aq)
SnS (s) → did not dissociates as form a solid covalent compound
Na₂SO₄ (aq) → 2 Na⁺ (aq) + SO₄²⁻ (aq)
The complete ionic equation can be given as:
Sn²⁺ (aq) + SO₄²⁻ (aq) + 2 Na⁺ (aq) + S²⁻ (aq) → SnS (s) 2 Na⁺ (aq) + SO₄²⁻ (aq)
Eliminating the common ions on the product and the reactant side:
Sn²⁺ (aq) + S²⁻ (aq) → SnS (s)
Learn more about ionic equation, here:
brainly.com/question/15467502
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