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satela [25.4K]
2 years ago
5

Hey ignore ths i didn mean to post

Chemistry
1 answer:
Sauron [17]2 years ago
7 0

Answer:

WHYYYYYYYYYYYYYYYYYYYYYYY

Explanation:

you said you didnt mean to post it but still typed it and posted it LOLLLLLLLLLLLLLL

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Can someone please help me solve this? i dont understand this problem :(
Bumek [7]

Answer:

–4020 KJ

Explanation:

The following data were obtained from the question:

H₂(g) + F₂(g) —> 2HF(g) ΔH = –536 KJ

Next, we shall determine the mass of H₂ that reacted from the balanced equation to produce –536 KJ of heat energy. This can be obtained as follow:

Molar mass of H₂ = 2 × 1 = 2 g/mol

Mass of H₂ from the balanced equation = 1 × 2 = 2 g.

Summary:

From the balanced equation above,

2 g of H₂ reacted to produce –536 KJ of heat energy.

Finally, we shall determine the heat change produced by the reaction of 15 g of H₂. This can be obtained as follow:

From the balanced equation above,

2 g of H₂ reacted to produce –536 KJ of heat energy.

Therefore, 15 g of H₂ will react to produce = (15 × –536)/2 = –4020 KJ of heat energy.

Thus, the heat change for the reaction is –4020 KJ

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