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mojhsa [17]
4 years ago
14

Balance the following equation: _____ Fe + _____Br2 -----> _____ FeBr3

Physics
1 answer:
Nataly_w [17]4 years ago
7 0

Answer:

2 Fe + 3 Br₂ → 2 FeBr₃

Explanation:

There are 2 Br atoms on the left, and 3 on the right.  So put a 3 in front of Br₂, and a 2 in front of FeBr₃.

_Fe + 3 Br₂ → 2 FeBr₃

Now there's 6 Br atoms on each side.  There are 2 Fe atoms on the right side, so put a 2 in front of Fe:

2 Fe + 3 Br₂ → 2 FeBr₃

Now the equation is balanced.

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Answer:

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Explanation:

From the question

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v_B=\sqrt{\frac{2(14.4\times 0.2(\cos 30° - \sin30°)+1.5\times 9.81\times 0.2}{1.5+0}}\\\\=\sqrt{\frac{6.618}{1.5}}\\\\=4.412m/s

Therefore, the velocity at which the collar strikes the end B is 4.412m/s

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