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Nikolay [14]
3 years ago
8

Which of the following will dissolve most quickly? A. two sugar cubes. . B. a tablespoon of coarse sugar. . C. a tablespoon of t

able sugar. . D. a tablespoon of ultrafine sugar.
Chemistry
2 answers:
anastassius [24]3 years ago
4 0
D. a tablespoon of ultrafine sugar.
Dimas [21]3 years ago
3 0
The one that will dissolve most quickly is : D. a tablespoon of ultrafine sugar

Unlike any other type of sugar, ultrafine sugar tend to have smaller crystal size. Which means that this substance will dissolve easier if it put into liquid such as tea or water

hope this helps
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1.) A balloon contains 0.126 mol of gas and has a volume of 2.74 L .
Ann [662]

Answer:

<u></u>

  • <u>Problem 1: 5.44L</u>
  • <u>Problem 2: 479mL</u>

Explanation:

<h2>Problem 1. </h2>

<u>a) Data:</u>

  • n₁ = 0.126 mol
  • V₁ = 2.74 L
  • n₂ = 0.126mol + 0.124mol
  • V₂ = ?
  • Conditions: constant temperature and pressure

<u>b) Physical principles:</u>

The volume occupied by a gas, when the temperature and pressure remain unchanged, is proportional to the number of moles of gas.

          \dfrac{n_1}{V_1}=\dfrac{n_2}{V_2}

<u>c) Solution:</u>

Solve for V₂ , substitute and compute:

        V_2=n_2\times\dfrac{V_1}{n_1}\\ \\\\  V_2=(0.126mol+0.124 mol)\times \dfrac{2.74L}{0.126mol}\\ \\ \\ V_2=5.44L

<h2>Problem 2.</h2>

<u>a) Data:</u>

  • n₁ = 0.547mol
  • V₁ = 295 mL
  • V₂ = ?
  • n₂ = 0.547mol + 0.342 mol
  • Conditions: constant temperature and pressure

<u>b) Physical principles:</u>

The same as above: the volume occupied by a gas, when the temperature and pressure remain unchanged, is proportional to the number of moles of gas.

          \dfrac{n_1}{V_1}=\dfrac{n_2}{V_2}

<u>c) Solution:</u>

Solve for V₂ , substitute and compute:

        V_2=n_2\times\dfrac{V_1}{n_1}\\ \\\\  V_2=(0.547mol+0.342 mol)\times \dfrac{295mL}{0.547mol}\\ \\ \\ V_2=479mL

4 0
3 years ago
Complete this equation for the dissociation of na2co3(aq). omit water from the equation because it is understood to be present.
Elanso [62]
Note that we are omitting the water.

So, sodium carbonate will basically dissociate into positive sodium ions and negative carbonate ions based on the following equation:
 <span>Na2CO3 → 2 Na(+) + CO3(2-)
</span>
If we took water into consideration:
Sodium carbonate will dissociate in water forming carbonic acid and sodium hydroxide. Since sodium hydroxide is a strong base, therefore, it will then neutralize the gastric acid, thus, acting as an antacid.
7 0
4 years ago
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Diseases can spread rapidly in cities. If a disease kills many people in a city but fewer in a rural area, this is an example of
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Answer:

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Explanation:

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Answer:

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Explanation:

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What are some similarities and differences between physical and chemical weathering
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(a brainliest would be appreciated)
3 0
3 years ago
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