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Sophie [7]
3 years ago
13

How much energy is needed to melt 47.6g of water

Chemistry
1 answer:
Rasek [7]3 years ago
5 0

Answer:

15.9 kJ

Explanation:

Use the equation q = nΔH

q = (47.6)(334)

q = 15898.4 J

or 15.9 kJ

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How many grams of mercury are needed to react completely with 157g of sulfur to form hgs?
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<span>To solve this we need to balance the equations first.
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3 years ago
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How many grams of barium sulfate, BaSO 4 , be precipitated when 2.25 moles of sodium sulfate , Na 2 SO 3 , reacts with an excess
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Answer:

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Explanation:

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The precipitation's equilibrium is:

SO₄⁻² (aq)  +  Ba²⁺ (aq)  ⇄  BaSO₄ (s) ↓       Kps

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