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Andrew [12]
3 years ago
8

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici

ent is "1". KNO3 → KNO2 + O2
Chemistry
2 answers:
Roman55 [17]3 years ago
5 0
2KNO3 -> 2KNO2 + O2. Hope this helps!
zalisa [80]3 years ago
5 0

Answer: 2KNO_3\rightarrow 2KNO_2+O_2

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced equation will be:

2KNO_3\rightarrow 2KNO_2+O_2

The atoms on reactant and product side must be same.

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<span>Conductor, and there you go, i hope this helped but if its wrong, i am extremly sorry</span>
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Suppose you have a spherical balloon filled with air at room temperature and 1.0 atm pressure; its radius is 17 cm. You take the
Sladkaya [172]
<span>Answer: 17.8 cm
</span>

<span>Explanation:
</span>

<span>1) Since temperature is constant, you use Boyle's law:
</span>

<span>PV = constant => P₁V₁ = P₂V₂


</span><span>=> V₁/V₂ = P₂/P₁</span>
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2) Since the ballon is spherical:


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<span>
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</span>

<span>3) Replacing in the equation V₁/V₂ = P₂/P₁:


</span><span><span>(r₁)³ / (r₂)³ </span>= P₂/P₁</span>
<span>
And you can solve for r₂: (r₂)³ = (P₁/P₂) x (r₁)³


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4 0
3 years ago
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