How can you tell when a solution is formed?

Answers

Answer 1

Answer: You may tell when a solution os formed when the item or particle, such as sugar or salt,
dissolves completely in the solvent, such as water.

Basically, you know when a solution is formed when the material you have placed in the solvent disappears :P

Answer 2

Answer: When the solute is completely dissolved into the solvent.

Related Questions

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Suggest two reasons why the UK government wants to encourage recycling of iron and steel......
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For the reaction:6Li(s)+N2(g)→2Li3N(s)
Determine:
the mass of N2 needed to react with 0.536 moles of Li.
the number of moles of Li required to make 46.4 g of Li3N.
the mass in grams of Li3N produced from 3.65 g Li.
the number of moles of lithium needed to react with 7.00 grams of N2.

Answers

Explanation:

$6Li(s)+N_2(g)\rightarrow 2Li_3N(s)$

1. Mass of $N_2$ needed to react with 0.536 moles of Li.

According to reaction, 6 moles of Li reacts with 1 mol of $N_2$ .

Then 0.536 moles of Li will react with:

$(1)/(6)* 0.536$ moles of $N_2$ that is 0.0893 moles.

Mass of $N_2[tex] gas needed:</strong></p><p><strong>[tex]=28 g/mol* 0.0893 mol=2.5004 g$

2.The number of moles of Li required to make 46.4 g of $Li_3N$

Moles of $Li_3N=(46.4 g)/(35 g/mol)=1.3257 mol$

According to reaction the 2 moles of $Li_3N$ are produced from 6 moles of Li.

Then 1.3257 moles of $Li_3N$ will produced from:

$(6)/(2)* 1.3257=3.9771 moles$

3.9771 moles of lithium will needed.

3. The mass in grams of $Li_3N$ produced from 3.65 g Li.

Moles of Li $=(3.65 g)/(7 g/mol)=0.5214 moles$

According to reaction, 6 moles of Li gives 2 moles of $Li_3N$

Then 0.5214 moles of Li will give $(2)/(6)* 0.5214$ that is 0.1738 moles of $Li_3N$ .

Mass of $Li_3N=0.1738 mole* 35 g/mol=6.083 g$

6.083 grams of $Li_3N$ will be produced.

4. The number of moles of lithium needed to react with 7.00 grams of $N_2$ .

Moles of $N_2=(7.00 g)/(28 g/mol)=0.25 moles$

1 mol of $N_2$ reacts with 6 mol of Li

Then, 0.25 moles of $N_2$ will ftreact with :

$6* 0.25 moles=1.5 moles$ of lithium

1.5 moles of Li will be needed.

Heated bricks or blocks of iron were used long ago to warm beds. A 1.49 -kg block of iron heated to 155 Celsius would release how many joules of heat as it cooled to 22 Celsius ?

Answers

Specific heat capacity= Quantity of heat/massxΔT
Shc of iron (constant)= 0.4494J/³C for 1g
1.49kg=1490g
Q=1490x(22-155)x0.4494
Q=89057.598J

Final answer:

The question pertains to the concept of specific heat capacity. Using the formula 'q = mcΔT' where 'q' is the heat transferred, 'm' is the mass of the substance, 'c' is the specific heat and 'ΔT' is the temperature change, we can calculate how much heat a block of iron would release when it cools.

Explanation:

To solve your question, we need to understand the concept of specific heat capacity, which is an intensive property that depends only on the type of substance absorbing or releasing heat. The specific heat capacity (c) of a substance, commonly called its "specific heat," is the quantity of heat required to raise the temperature of 1 gram of the substance by 1 degree Celsius. The specific heat of iron is :

0.449 J/g°C

To calculate the amount of heat released, we need to use the formula for heat transfer as follows: q = mcΔT where:

q is the heat transferred
m is the mass of the substance
c is the specific heat of the substance
ΔT is the change in temperature

In this case, the mass of iron is 1.49 kg or 1490 g, the specific heat capacity of iron is 0.449 J/g°C, and the change in temperature is 155°C - 22°C = 133°C.

By multipying these values in the formula we get: q = 1490g x 0.449 J/g°C x 133°C. Therefore, the block of iron would release calculated amount of Joules of heat as it cooled from 155°C to 22°C.

Learn more about specific heat capacity here:

brainly.com/question/28302909

#SPJ11

As the tempreture of a liquid increases the solubility of a liquid of that liquid

Answers

As the temperature increases, the solubility of the solute in the liquid also increases. This is due to the fact that the increase in energy allows the liquid to more effectively break up the solute. The additoin of energy also shifts the equilibrium of the reation to the right since it takes energy to dissolve most things and you are adding more of it (this is explained with Le Chatlier principles).

I hope this helps and also I assumed that your question involved the solubility of an ionic substance in a solvent like water. If that was not your question feel free to say so in the comments so that I can answer your actually question.

When the compound, Na2S, is mixed with water, the Na2S is:soluble because all Na+1 compounds are soluble in water

insoluble because most Na+1 compounds are insoluble in water

soluble because all S−2 compounds are soluble in water

insoluble because there are no water soluble S−2 compounds

Answers

Answer: Option (a) is the correct answer.

Explanation:

Atomic number of sodium is 11 and its electronic distribution is 2, 8, 1. Whereas atomic number of sulfur is 16 and its electronic distribution is 2, 8, 6.

So, when both sodium and sulfur chemically combine together then it results in the formation of an ionic bond due to transfer of an electron from sodium to sulfur atom.

Sodium changes into $Na^(+)$ by losing an electron and sulfur changes into $S^(2-)$ by gain of two electrons from two sodium atoms.

As it is known that water is a polar solvent and all ionic substances will dissolve in water.

Therefore, we can conclude that when the compound, $Na_2S$ , is mixed with water, the $Na_2S$ is soluble because all $Na^(+1)$ compounds are soluble in water.

When the compound, Na2S, is mixed with water, the Na2S is soluble because all Na+1 compounds are soluble in water. The rest of the choices do not answer the question above.

Which one of the following groups of chemical compounds is composed entirely of organic compounds?A. C2H4O, CH2O, CaSO4
, C3H5
(OH)3
B. C2H2
, CH4
, CaCl2
, CaCN2
C. Ch3OCH3
, Ca3
(PO4
)2
, CO2
, H2CO3
D. C6H6
, C2H5OH, C6H5CH3
, C3H5
(NO3
)3

Answers

Answer;

D. C6H6, C2H5OH, C6H5CH3, and C3H5(NO3)3.

Explanation;

-Organic compound are chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen, like the examples above in choice D. . Inorganic Compoundson the other hand, are compounds made from any elements except those compounds of carbon, such as CaSO4, CaCl2 and Ca3(PO4)2 in A, B and C respectively.

The correct answer is D.

In group A, CaSO4 is not organic; in group B, CaCl2 is not organic; in group C, Ca3(PO4)2 is not organic.

Hope this helps~

Which equation represents sublimation?(1) I2(s) ==> I2(g) (3) I2(l)==>I2(g)
(2) I2(s) ==>I2(l) (4) I2(l)==>I2(s)

Answers

Answer : The correct options is, (1) $I_2(s)\rightarrow I_2(g)$

Explanation:

(1) $I_2(s)\rightarrow I_2(g)$ :

This reaction shows sublimation process in which the phase changes from solid state to gaseous state at constant temperature.

(2) $I_2(l)\rightarrow I_2(g)$ :

This reaction shows evaporation process in which the phase changes from liquid state to gaseous state at constant temperature.

(3) $I_2(s)\rightarrow I_2(l)$ :

This reaction shows melting process in which the phase changes from solid state to liquid state at constant temperature.

(4) $I_2(l)\rightarrow I_2(s)$ :

This reaction shows freezing process in which the phase changes from liquid state to solid state at constant temperature.

Hence, from this we conclude that the option (1) equation represents sublimation process.

The answer is (1). The definition of sublimation is the change of solid substance directly to gas. In the equation, the "s" stands for solid. The "l" stands for liquid. And the "g" stands for gas.

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