When substances are evenly spread throughout a mixture, it is called ___________________

dezoksy [38]

Answer:

que se yohdhdhdjdjudbdudbudbff

3 0

3 years ago

Type the correct answer in the box. sodium carbonate (na2co3) is sometimes used as a water-softening agent. suppose that a worke

Natali [406]

The mass of dissolved sodium carbonate is 109 g of Na₂CO₃.

<h3>What is a solution ?</h3>

A solution consists of two elements , a solute and a solvent .

A solute is dissolved into solvent to make a solution.

The concentration of a solution is measure by Molarity , Molality , mass% etc.

It is given in the question that

sodium carbonate ( Na₂CO₃) is sometimes used as a water-softening agent

a worker prepares a 0.724 m solution of Na₂CO₃ and water.

the volume of the solution is 1.421 liters.

Mass of dissolved sodium carbonate is grams =?

Concentration = 0.724 M

Volume = 1.421 liters

Molecular mass of Na₂CO₃ = 106 g

The mass of the solute needs to be determined

Molarity = moles / volume\

moles = Molarity x volume

Substituting the values

moles = 0.724 x 1.421

moles = 1.029

1 mol of Na₂CO₃ means 106 gm of Na₂CO₃

Then 1.029 moles will mean 1.029 * 106

109.07 gm

Therefore , the mass of dissolved sodium carbonate is 109 grams.

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7 0

2 years ago

As the sun heats the surface of the oceans, two layers of water result. What separates the layers?

Basile [38]

Answer:

Thermocline separate these two layers.

Explanation:

Ocean consist of three major layers on the basis of temperature.

1. Upper layer

2. Deep layer

3. Thermocline

Upper layer:

The first layer is called upper layer which is present on the surface and directly expose to the sun. The sun heat up this upper layer easily and warm it.

Deep layer

The deep layer is present below the thermocline. It is present in deep where sunlight can not approach to it and its temperature remain low.

Thermocline

It is the middle layer, present between the upper and deep layer. It separated the upper layer from deep layer. Its upper portion is warmer while lower is colder.

4 0

3 years ago

The element in Period 4 and Group 14 of the Periodic Table would be classified as a

Paul [167]

Answer:

Chalcogen

Explanation:

7 0

3 years ago

Identify which statement about a solution is correct. Group of answer choices The solution has the same physical state as the ph

zavuch27 [327]

Water can only be the solvent, never the solute is the statement about a solution that is correct.

The solute is the substance that, in general, is found in less quantity and that dissolves in the mixture.

The solvent, on the other hand, is the substance that usually appears in greater quantity and where the solute dissolves.

The most usual thing is that the solvent is the substance that establishes the physical state of the solution.

Water is considered a universal solvent, since it is the liquid that dissolves the most substances, a quality linked to its status as a “polar molecule”, this is due to its ability to form hydrogen bonds with other substances.

Solubility depends on the properties of a solvent that allow it to interact with a solute in a stronger way than the solvent particles do with each other.

In particular, the polar character of water makes it an excellent solvent for polar and ionic solutes, which are called hydrophilic.

Therefore, we can conclude that water can only be the solvent, never the solute is the statement about a solution that is correct.

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5 0

2 years ago

When substances are evenly spread throughout a mixture, it is called ____________________?