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shepuryov [24]
3 years ago
10

Sodium carbonate is often used in certain candies to create fizzy bubbles when solid weak acids in the candy are dissolved with

saliva. Explain the fizzing effect.
Chemistry
1 answer:
erastovalidia [21]3 years ago
6 0

Answer is: in chemical reaction with with weak acid, sodium carbonate produce carbonic acid (H₂CO₃), which decomposes into carbon(IV) oxide (fizzy bubbles) and water.

Balanced chemical reaction:

Na₂CO₃ + 2HClO → CO₂(g) + H₂O + 2NaClO.

Chemical decomposition is the separation of a carbonic acid into water and carbon dioxide: H₂CO₃ → CO₂ + H₂O.

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Many chemistry problems result in equations of the form
Gnom [1K]

Answer:

When this equation is solved, the two values of the unknown are 0.0643 and -0.082

Explanation:

Given

1.77 * 10^{-2} = \frac{x^2}{0.298 - x} --- the actual equation

Required

The values of x

We have:

1.77 * 10^{-2} = \frac{x^2}{0.298 - x}

Cross Multiply

1.77 * 10^{-2} * (0.298 - x)= x^2

Multiply both sides by 100

1.77  * (0.298 - x)= 100x^2

Open bracket

0.52746 - 1.77x= 100x^2

Rewrite as:

100x^2 + 1.77x - 0.52746 =0

Using quadratic formula:

x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}

Where:

a = 100; b = 1.77; c = -0.52746

So, we have:

x = \frac{-1.77 \± \sqrt{1.77^2 - 4*100*- 0.52746 }}{2*100}

x = \frac{-1.77 \± \sqrt{214.1169}}{2*100}

x = \frac{-1.77 \± 14.63}{200}

Split

x = \frac{-1.77 + 14.63}{200}\ or\ x = \frac{-1.77 - 14.63}{200}

x = \frac{12.86}{200}\ or\ x = \frac{-16.40}{200}

x = 0.0643\ or\ x = -0.082

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Explanation:

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What does the δ– symbol mean on a water diagram?
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tensa zangetsu [6.8K]

Answer: Set with equal densities are:

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It is an intensive property which means that two different masses of same substance will have same value of density under same conditions.

So, from the given samples with equal density are:

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