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3 years ago

Energy release is to condensation as energy input is to _________.

Chemistry

2 answers:

melamori03 [73]3 years ago

7 0

Answer:

sublimation

Explanation:

the other choices release energy

Rudik [331]3 years ago

6 0

Hey mate here's your answer

Ans: B, Sublimation. This is because you must input energy in order to get a solid to go directly to a gas while the other ones release energy (and dispersion has nothing to do with these at all)

hope so the following may help you thanks

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If you were to place the black probe of the voltmeter on the silver electrode and the red probe on the Zinc electrode: What volt

podryga [215]

Answer:

When the red test lead is positive (+) and the black test lead negative (-), the meter will register voltage in the normal direction.

Explanation

5 0

2 years ago

Compound X has a molar mass of 416.48 g mol

bazaltina [42]

Answer:

P₂Cl₁₀

Explanation:

From the question given above, the following data were obtained:

Molar mass of compound X = 416.48 g/mol

Percentage of phosphorus (P) = 14.87%

Percentage of Chlorine (Cl) = 85.13%

Molecular formula of X =?

Next, we shall determine the empirical formula of compound X. This can be obtained as follow:

P = 14.87%

Cl = 85.13%

Divide by their molar mass

P = 14.87 / 31 = 0.480

Cl = 85.13 / 35.5 = 2.398

Divide by the smallest

P = 0.480 / 0.480 = 1

Cl = 2.398 / 0.480 = 5

Empirical formula of compound X is PCl₅

Finally, we shall determine the molecular formula of compound X. This can be obtained as follow:

Molar mass of compound X = 416.48 g/mol

Empirical formula = PCl₅

Molecular formula =?

Molecular formula= [Empirical formula]ₙ

[PCl₅]ₙ = 416.48

[31 + (35.5 × 5)]ₙ = 416.48

[31 + 177.5]n = 416.48

208.5n = 416.48

Divide both side by 208.5

n = 416.48 / 208.5

n = 2

Molecular formula = [PCl₅]ₙ

Molecular formula = [PCl₅]₂

Molecular formula = P₂Cl₁₀

Therefore, the molecular formula of compound X is P₂Cl₁₀

4 0

3 years ago

Give the number of lone pairs around the central atom and the molecular geometry of XeF4.A)0 lone pairs, tetrahedralB)1 lone pai

vovangra [49]

Answer: 2 lone pairs, square planar

Explanation:

Using the VSEPR ( Valence Shell Electron Pair Repulsion)Theory

To calculate the number of lone pairs electron can be done using the formula;

Number of electrons = ½ (V+N-C+A)

V mean valency of the central atom

N means number of monovalent bonding atoms

C means charge on cation

A means charges on anion

Therefore, to calculate the number of lone pair electron C=A=0;

Number of electrons = ½ (8+4) = 12/2 = 6

Number of bonding pair = 4

Number of lone pairs of electron = 6-4 = 2

The hybridrization of the compound is sp3d2 because the number of electrons around the central atom is 6.

The geometry of the compound is square planar and this is because of the repulsion between the bonding pair of electrons and lone pair of electrons which causes the lone pair of electrons to lie in a perpendicular plane in order to acquire stability.

4 0

3 years ago

Classify each process as an endothermic or exothermic process. drag the appropriate items to their respective bins. helpreset ex

myrzilka [38]

Answers:

1) <span>Breaking Solvent-Solvent Attractions is an Endothermic Process.

2) </span><span>Breaking Solute-Solute Attractions is an Endothermic Process.

3) </span><span>Forming Solute-Solvent Attractions is an Exothermic Process.

Explanation:
When a solute is dissolved in solvent it either releases heat or absorbs heat depending upon the the interactions broken and interactions formed. At first, the solvent solvent interactions are broken , this process requires heat which is provided either from external source or is provided by the forming of solute solvent bond forming process which is exothermic.

When the solvent molecules get apart the solute particles enter to form interactions with elimination of heat. So, if the heat required to break solvent solvent interactions is greater than the heat provided by solute solvent interactions formation then the solute will not dissolve at room temperature and vice versa.</span>

7 0

3 years ago

Read 2 more answers

Balance the following equations:

lesya [120]

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(I) $N_{2} + 3H_{2} --> 2NH_{3}$