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2 years ago

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Considering factors that affect that solubility which statement below true?

1 answer:

vovikov84 [41]2 years ago

3 0

Answer:

Part A. The solubility of gases in water increases with increasing temperature.

Part B. Hexane (C₆H₁₄)

Explanation:

Part A

<em>Considering factors that affect that solubility which statement below true? </em>

<em>With a few exceptions, the solubility of most solid solutes in water decreases as the solution temperature increases.</em> FALSE. With a few exceptions, the solubility of most solid solutes in water increases as the solution temperature increases.
<em>The solubility of gases in water increases with increasing temperature. </em> FALSE. In general, the solubility of gases decreases with increasing temperature.
<em>The solubility of a gas in any solvent is increased as the partial pressure of the gas above the solvent Increases. </em> TRUE. According to Henry's law, the solubility of a gas in a liquid is proportional to its partial pressure.
<em>Substances with similar intermolecular attractive forces tend to be insoluble in one another.</em> FALSE. Substances with similar intermolecular attractive forces tend to be soluble in one another.

Part B

<em> Which of these is the best solvent for nonpolar solutes? </em>

<em>acetone (CH₃COCH₃) </em>

<em>ethanol (CH₃CH₂OH) </em>

<em>hexane (C₆H₁₄) </em>

<em>water</em>

There is a general rule that states "like dissolves like", meaning polar is soluble in polar and nonpolar is soluble in nonpolar. Thus, hexane, which is the least polar solvent, would be the best choice for nonpolar solutes.

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prisoha [69]

Answer:

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2 years ago

Which type of reactions form salts?

Marysya12 [62]

Answer:

Neutralization reactions

Explanation:

A neutralization reaction is a reaction between an acid and a base. Products of this type of reaction is water and a salt. The pH of the salt product would depend on how strong or weak the base and acid would be when they react with each other. Although the characteristics of bases and acids are practically polar opposites, when combined, they cancel each other our producing a neutralized product.

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2 years ago

Molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. This is a statement of __________.A) the law of multiple

fgiga [73]

Answer:

The correct answer is B.

Explanation:

The molecule of water has 2 atoms of hydrogen and 1 atom of oxygen.

The ratio of masses are given as:

$2\times 1 g/mol: 1\times 16 g/mol= 1 : 8$

This illustrates the law of definite proportions which is also known as law of constant compositions .

The law states that 'the elements combining to form compound always combine in a fixed ratio by their mass.'

Whereas :

Law of multiple proportion states that when two elements combine with each other to form more than one compounds , the mass of one element with respect to the fixed mass of another element are in ratio of small whole numbers.

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

In a balanced chemical reaction ,total mass on the reactant side must be equal to the total mass on the product side.

Law of conservation of energy states that energy can neither be created nor be destroyed but it can only be transformed from one form to another form.

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2 years ago

How would you define Acid

Zepler [3.9K]

Answer:

a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind.

Explanation:

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2 years ago

Combined gas law problem: a balloon is filled with 500.0 mL of helium at a temperature of 27 degrees Celsius and 755 mmHg. As th

Papessa [141]

The statement of the combined gas law for a fixed amount of gas is,
PV/T = constant
Here, the units of pressure and volume must be consistent and the temperature must be the absolute temperature (Kelvin or Rankine).
0.65 atm is equivalent to 494 mmHg
Using the equation:
(755 x 500) / (27 + 273) = (494 x V) / (-33 + 273)
V = 3396 ml = 3.4 liters

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2 years ago