Which laboratory test result can be used to determine if KCl(s) is an electrolyte?(1) pH of KCl(aq)
(2) pH of KCl(s)
(3) electrical conductivity of KCl(aq)
(4) electrical conductivity of KCl(s)

Answer:

When the kinetic energy of water vapor decreases during condensation, slowly moving particles near the cool surface condense.

Explanation:

The change of state from a gas to a liquid is condensation. Liquid molecules which have this certain kinetic energy threshold escape from the surface and become vapor. As a result, the remaining liquid molecules now have lower kinetic energy. The temperature of the remaining liquid decreases as evaporation occurs.

The air that surrounded it cooled the cold can or glass. When you're cooling off  .They lose kinetic energy, a gas. The particles move more slowly as they move, the  attractions between them cause the formation of droplets of liquid. Condensed With,  when hot air containing water vapor reaches water, water also forms.  Cold surface touch, such as a glass of ice or soil that has a cold surface  refrigerated throughout the night.

Answer: The molecular weight of the dibasic acid is 89.6 g/mol

Explanation:

Normality is defined as the amount of solute expressed in the number of gram equivalents present per liter of solution. The units of normality are eq/L. The formula used to calculate normality:

     ....(1)

We are given:

Normality of solution =

Given mass of solute = 0.56 g

Volume of solution = 250 mL

Putting values in equation 1, we get:

Equivalent weight of an acid is calculated by using the equation:

  .....(2)

Equivalent weight of acid = 44.8 g/eq

Basicity of an acid = 2 eq/mol

Putting values in equation 2, we get:

Hence, the molecular weight of the dibasic acid is 89.6 g/mol

Answer:

Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. On the other hand, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.

An Arrhenius base yields hydroxide ion as the only negative ion in an aqueous solution.

What is an Arrhenius base?

This is defined as a substance which dissociates in water to form hydroxide (OH–) ions.

The hydroxide ion formed from the aqueoussolution is the only negative ion which is why option 4 was chosen.

Read more about Arrhenius base here brainly.com/question/1303158

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Arrhenius bases are substances which produces hydroxide ions in solution. The only negative ion in an aqueous solution is the hydroxide ion. The answer is number 4.

Answer:

The correct answer is option (3) "using nonviolent tactics such as boycotts and hunger strikes".

Explanation:

Cesar Chavez was a leader of American labor and civil right activists that fought to unionized migrant farm workers by the creation of The National Farm Workers Association. Cesar Chaves used nonviolent tactics to support the migrant farm workers. For instance, when Filipino American farm workers protested for higher wages in 1965, he encouraged Americans to boycott table grapes to support them; while he once performed a 24-day hunger strike in 1972 in the Santa Rita Center as a response to Arizona prohibiting boycotts and strikes by farm workers.