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hichkok12 [17]
3 years ago
5

Explain why chemical equations have to be balanced

Chemistry
2 answers:
vivado [14]3 years ago
5 0
Chemical equations are to be balanced to be able to follow the law of conservation of mass where it says that mass cannot be created or destroyed. Reactions should be that the mass of the reactants is equal to the mass of the products. 
PolarNik [594]3 years ago
5 0

Answer:

Chemical equations are to be balanced to be able to follow the law of conservation of mass where it says that mass cannot be created or destroyed. Reactions should be that the mass of the reactants is equal to the mass of the products. 

Explanation:

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Answer:

hello, There!

I'll~ be ~Glad~to~help~you!

<h2>Your Question↓</h2><h3>Which of the following are observations?</h3><h2>Answer↓</h2>

❄ the candle floats, the tires are flat, and the dog is barking are observations.❄

Explanation:

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A 25.0 mL sample of 0.25 M potassium carbonate (K2CO3) solution is added to 30.0 mL of a 0.40 M barium nitrate (Ba(NO3)2) soluti
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Answer:

0.10M of Ba²⁺ is the concentration of the metal in excess

Explanation:

Based on the chemical reaction:

K₂CO₃(aq) + Ba(NO₃)₂(aq) → BaCO₃(s) + 2KNO₃(aq)

<em>1 mole of potassium carbonate reacts per mole of barium nitrate</em>

<em />

To solve this question we need to find the moles of each salt to find then the moles of Barium in excess:

<em>Moles K₂CO₃:</em>

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<em>Moles Ba(NO₃)₂:</em>

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That means moles of Ba²⁺ that don't react are:

0.012 mol - 0.00625mol = 0.00575 moles Ba²⁺

In 25 + 30mL = 55mL:

0.00575 moles Ba²⁺ / 0.055L =

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