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Andreas93
1 month ago
8

A student places a small amount of water in a glass dish and then carefully places a small paperclip on the surface of the water

. The paperclip floats. What happens if the student adds a drop or two of dish soap to the water? Explain your answer.
Chemistry
2 answers:
Anarel [2.9K]1 month ago
6 0

It seems that adding soap will cause the paperclip to drop through the water to the bottom of the dish. Soap acts as a surfactant, decreasing the water's surface tension. Since the surface tension initially held the paperclip up, a reduction in this tension will lead to the paperclip sinking.

VMariaS [2.9K]1 month ago
3 0
Include:
- When soap is added, the paperclip sinks to the bottom of the dish.
- Soap functions as a surfactant.
- Surfactants reduce the surface tension of a liquid.
- The surface tension of water had previously supported the paperclip.
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VMariaS [2998]

Answer: Yes, there is sufficient sodium carbonate available.

Explanation:

In this scenario, according to the specified reaction:

Using stoichiometry, one can figure out the grams of sodium carbonate required to neutralize 1,665 g of sulfuric acid as outlined below:

H_2SO_4(aq) + Na_2CO_3(s) \rightarrow Na_2SO_4(aq) + CO_2(g) + H_2O(l)

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A. Yes, there is sufficient sodium carbonate available.

1,665gH_2SO_4*\frac{1molH_2SO_4}{98.08gH_2SO_4}*\frac{1molNa_2CO_3}{1molH_2SO_4} *\frac{105.99gNa_2CO_3}{1molNa_2CO_3}*\frac{1kgNa_2CO_3}{1000gNa_2CO_3}\\m_{Na_2CO_3}=1.80gNa_2CO_3Best regards.

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Answer:

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Explanation:

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