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2 months ago

Four students are developing a model to illustrate covalent and ionic substances dissolving in

Chemistry

1 answer:

Anarel [2.9K]2 months ago

5 0

Students dealing with ionic bonds comprehend better how to convey what the model should showcase.

Explanation:

Upon dissolving ionic compounds in water, the compounds separate into their constituent ions via a process called dissociation.
The ions become attracted to water molecules, which carry a polar charge.
If the pull between the ions and the water molecules is strong enough to disband the ionic bonds, the compound dissolves.
The ions disperse in the solution, each surrounded by water molecules to inhibit reattachment.
The ionic solution forms an electrolyte, allowing it to conduct electricity.
In contrast, while covalent compounds do dissolve in water, they separate into molecules, not individual atoms.
Water acts as a polar solvent, yet covalent compounds are generally nonpolar.
This implies that covalent compounds often do not dissolve in water and instead form a distinct layer on top of the water.

Greetings!

The result is:

The new volume is: $2L$

Rationale:

Because the temperature remains constant, we can apply Boyle's Law to solve this issue.

Boyle's Law stipulates that:

$P_{1}V_{1}=P_{2}V_{2}$

Where,

P is the gas's pressure.

V is the gas's volume.

According to the information provided:

$V_{1}=2.5L\\P_{1}=6.0atm\\P_{2}=7.5atm$

Let's put the values into the equation:

$2.5L*6.0atm=7.5atm*V_{2}$

$2.5L*6.0atm=7.5atm*V_{2}\\\\V_{2}=\frac{2.5L*6.0atm}{7.5atm}=\frac{15L.atm}{7.5atm}=2L$

Consequently, the new volume is: $2L$

Wishing you a lovely day!

7 0

2 months ago

A sailor on a trans-Pacific solo voyage notices one day that if he puts 735.mL of fresh water into a plastic cup weighing 25.0g,

Anarel [2989]

Answer:

Amount of salt in 1 L seawater = 34 g

Explanation:

Based on Archimedes' principle, the mass of fresh water and the mass of the cup are equal to the mass of the same volume of seawater.

The mass of freshwater can be calculated using density times volume.

1 cm³ is equivalent to 1 mL.

The mass of freshwater is 0.999 g/cm³ multiplied by 735 cm³, which results in 734.265 g.

The total mass of the freshwater and cup combined is 734.265 g plus 25 g, equating to 759.265 g.

This means the mass for an equal volume of seawater is 759.265 g.

The volume of the seawater displaced is 735 mL, which is 0.735 L (assuming the cup's volume can be disregarded).

We know that 1 liter equals 1000 cm³ or 1000 mL.

The density of seawater can be determined as mass divided by volume.

The density of seawater becomes 759.265 g divided by 0.735 L, yielding 1033.01 g/L.

Conversely, the density of freshwater in g/L is calculated as 0.999 g/(1/1000) L, equating to 999 g/L.

The mass of salt dissolved in 1 liter of seawater is calculated as 1033.01 g - 999 g, which equals 34.01 g.

Thus, the amount of salt in 1 L of seawater is 34 g.

4 0

2 months ago

How many moles of copper would be needed<br> to make 1 mole of Cu,O?

castortr0y [3046]

You can find further information regarding each unit of measurement: the molecular weight of Copper(I) Oxide or grams. The molecular formula for Copper(I) Oxide is Cu2O. The SI base unit for the amount of substance is the mole. One mole translates to 1 mole of Copper(I) Oxide, equating to 143.0914 grams.

4 0

1 month ago

How can a piece of wood floating on water illustrate the condition of lowest potential energy and maximum

Tems11 [2777]

Answer:

By reducing the height of the center of gravity of the object in relation to its center of buoyancy

Explanation:

In the field of hydrostatics, for a floating object, the state of equilibrium corresponds to either a peak or a trough in potential energy. Stability in equilibrium occurs when the potential energy is minimized. Achieving a lower position of the center of gravity of the floating object compared to its center of buoyancy creates a stable equilibrium arrangement.

4 0

3 months ago