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melomori [17]
3 years ago
6

Which option correctly describes the relative charges and masses of the subatomic particles?

Chemistry
1 answer:
Alina [70]3 years ago
3 0

Answer:

D

Explanation:

D Is The Answer Fella, My Head Hurt Really Bad

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What is a light-year?
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I think it is B the distance light travels from the sun to the earth 
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3 years ago
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The ΔH vap of a certain compound is 46.55 kJ⋅ mol−1 and its ΔS vap is 67.37 J⋅mol−1⋅K−1.
arsen [322]

690 Kelvin is the boiling point of this compound.

Explanation:

Enthalpy is the sum of internal energy and the product of pressure and volume that is how much energy is in the substance.

Entropy is the measurement of randomness and measure of thermal energy per unit of temperature.

ΔH vap of compound is 46.55 kJ⋅ mol− or  J.MOL-1

ΔS vap  is 67.37 J⋅mol−1⋅K−1.

The boiling point or temperature can be calculated by the formula:

T= \frac{ΔH vap}{ΔS vap}

T =\frac{46550}{67.37}      

  = 690 Kelvin

The boiling point is the temperature when atmospheric temperature gets equal to

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3 years ago
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In a Lewis structure, why must pairs of unshared of lone pairs if dots be placed around the outside of some of the atoms
Maksim231197 [3]

Answer:

In a Lewis symbol, the symbol for the element is used to represent the atom and its core electrons. Dots placed around the atom are used to indicate the valence electrons. ... In 1916, Gilbert Newton Lewis, an American chemist, suggested that molecules were formed when atoms shared pairs of outer electrons.

Explanation:

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3 years ago
Which reaction occurs at the cathode of a galvanic cell that has an aluminum electrode in an electrolyte with aluminum ions and
Elena L [17]

Answer:

{ \bf{Cu {}^{2 + } + 2e \:  → \: Cu }}

6 0
3 years ago
Which is more water soluble hexanoic acid or sodium hexanoate?
vova2212 [387]

Answer:

Explanation:

Hexanoic acid [CH 3(CH 2) 4COOH] is barely soluble in water (about 1.0 g/100 g of water). Palmitic acid [CH 3(CH 2) 14COOH], with its large nonpolar hydrocarbon component, is essentially insoluble in water. The carboxylic acids generally are soluble in such organic solvents as ethanol, toluene, and diethyl ether.

<em>hope this help ya~</em>

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