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oee [108]
3 years ago
5

Please answer the questions in the pic! 15 points!

Chemistry
1 answer:
lesya [120]3 years ago
3 0
1. 80 Kj
2. 120-80= 40 Kj
3. 120-20= 100Kj
4. 20-80= -60Kj
5. +60 Kj
6. Exothermic because 4 is negative
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Answer:

please I think the answer is A.

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3 years ago
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An experiment reacts 20.4 g of zinc metal with a solution containing an excess of iron (III) sulfate. After the reaction, 10.8 g
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Answer:

The answer to your question is 92.7%

Explanation:

Balanced Chemical reaction

                             3 Zn  + Fe₂(SO₄)₃   ⇒   2Fe   +   3ZnSO₄

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                           196.2 g of Zinc ------------------ 112 g of Iron

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