For every Pb+2 ion that is formed, how many Cl- ions are formed? (Refer to the reaction in the lesson above.) answer choices
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3
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4

Considering the Charles' Law, the volume increases from 400 mL to 410.85 mL as the temperature increases from 22.0 °C to 30.0°C.

Charles' Law

Charles' Law consists of the relationship that exists between the volume and the temperature of a certain amount of ideal gas, which is maintained at a constant pressure.

For a given sum of gas, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. This is, the volume is directly proportional to the temperature of the gas:

In summary, Charles' law is a law that says that when the amount of gas and pressure are kept constant, the ratio between volume and temperature will always have the same value:

Studying two different states, an initial state 1 and a final state 2, it is fulfilled:

Volume change

In this case, you know:

• V1= 400 mL
• T1= 22 C= 295 K (being 0 C= 273 K)
• V2= ?
• T2= 30 C= 303 K

Replacing in the Charles's law:

Solving:

410.85 mL= V2

Finally, the volume increases from 400 mL to 410.85 mL as the temperature increases from 22.0 °C to 30.0°C.

Learn more about Charles's law:

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Answer : The correct option is, (2) an acid

Explanation:

As we know that when a substance (acid) that dissolves in water, it produces hydronium ion as a positive ion and conjugate base as a negative ion.

For example :

When (acid) dissolves in water, it produces hydronium ion as a positive ion and conjugate base as a negative ion.

The balanced reaction will be,

Therefore, the substance is, (2) an acid

Answer:

b. 3

Explanation:

Each level has its electrons distributed in different sub-levels, which can be of four types: s, p, d, f

In each sub-level, there is a certain number of orbitals that can contain a maximum of 2 electrons each.

For example, the sub-level s can only contain 2 electrons, therefore it has only one orbital.

The sub-level p can contain 6 electrons, and since each orbital can contain a maximum of 2 electrons it means that the sub-level p has 3 orbitals.

Answer:

Explanation:

-Octet forms when the valence electrons are gained, lost or shared.

-In order to become stable, which has 8 valence electrons (octet), nonmetal groups such as group 17, needs to gain 1 more electron to become 8/ octet.

When gaining that 1 electron, group 17 elements become negative ion or anions

-For metal groups such as group 1, they need to lose that 1 electron to become stable. When they lose that 1 electron, they become positive ion which is cation.

Hope this helps