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sukhopar [10]
3 years ago
15

Is a exploding firework a physical change or a chemical change ?

Chemistry
2 answers:
Ostrovityanka [42]3 years ago
5 0
It is a chemical change :)
just olya [345]3 years ago
5 0
It’s a chemical change
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5 0
3 years ago
The standard enthalpy of formation (ΔHf°) of calcium carbonate is –1207 kJ/mol. Which ONE of the equations below has ΔH° = –1207
Art [367]

Answer:

A) Ca(s) + C(s) + 3/2 O₂(g) → CaCO₃(s)

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That means, the equation that represents standard enthalpy of CaCO₃ is:

<h3>A) Ca(s) + C(s) + 3/2 O₂(g) → CaCO₃(s)</h3><h3 />

<em>Is the equation that has ΔH° = -1207kJ/mol</em>

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3 years ago
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4. NaOH
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