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4vir4ik [10]
3 years ago
5

A camper burned a piece of paper to start a campfire. is burning paper a physical or chemical change? why? 

Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
4 0
A camper burning a piece of paper to start a campfire is a chemical change - the way you can think of this is to consider the fact that the paper cannot be put back together and has become ash, so this is therefore a chemical change. The carbon in the paper is oxidized into other chemical including carbon dioxide. Mass was conserved during this reaction because the mass is still the same, just in a different form.
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What is the net ionic equation of the reaction of mgso4 with sr(no3)2?
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Balanced chemical reaction:  

MgSO₄(aq) + Sr(NO₃)₂(aq) → Mg(NO₃)₂(aq) + SrSO₄(s).

Ionic reaction:  

Mg²⁺(aq) + SO₄²⁻(aq) + Sr²⁺(aq) + 2NO₃⁻(aq) → Mg²⁺(aq) + 2NO₃⁻(aq) + SrSO₄(s).

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Magnesium sulfate (MgSO₄), strontium nitrate (Sr(NO₃)₂ and magnesium nitrate (Mg(NO₃)₂) are soluble in water. Strontium sulfate (SrSO₄) is not soluble in water.

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6 0
3 years ago
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Answer by YourHope:


Hi! :)


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