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3 years ago

What can help overcome a positive enthalpy of solution and allow a solid

Chemistry

1 answer:

IgorC [24]3 years ago

4 0

Answer: D. An increase in entropy

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from an disordered arrangement to an ordered arrangement, the entropy is said to increase and vice versa.

For a reaction to be spontaneous, the enthalpy of the solution must decrease and the entropy must increase.

To overcome a positive enthalpy of solution and allow a solid solute to dissolve in water, an increase in entropy would make the reaction spontaneous as the system would move to a more disordered state.

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Which atom has the larger electronegativity? B, N, C, O

luda_lava [24]

Answer:

B 2.0

Explanation:

B 2.0

N 3.0

C 2.5

O 3.5

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3 years ago

The locomotor system includes which two systems?

Taya2010 [7]

Answer:

The human musculoskeletal system (also known as the locomotor system, and previously the activity system) is an organ system that gives humans the ability to move using their muscular and skeletal systems. The musculoskeletal system provides form, support, stability, and movement to the body.

Explanation:

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3 years ago

Read 2 more answers

Which, if any, of the substances had resonance structures? how many resonance did each substance have?

exis [7]

The following are the compounds in the list that possesses resonance structures; CO2, [NO2]-, SO2 and OF2

<h3>What are resonance structures?</h3>

Resonance structures tend to arise when a single structure does not account for all the properties of a compound. This is a concept that arose from the valence bond theory.

The following are the compounds in the list that possesses resonance structures; CO2, [NO2]-, SO2 and OF2

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3 years ago

2. A solvent used in cleaning is found to contain only the elements carbon, hydrogen, and chlorine. When a

KIM [24]

mass of C = 0.238 g

mass of H =0.00989 g

mass of Cl = 1.05 g

Explanation:

Determine the masses of carbon, hydrogen, and chlorine in the original sample of the solvent.

First we need to calculate the molar mass of carbon dioxide (CO₂) and water (H₂O)

molar mass of CO₂ = molar mass of C × 1 + molar mass of O × 2

molar mass of CO₂ = 12 × 1 + 16 × 2 = 44 g/mole

molar mass of H₂O = molar mass of H × 2 + molar mass of O × 1

molar mass of H₂O = 1 × 2 + 16 × 1 = 18 g/mole

Now, to find the mass of carbon and hydrogen in the original sample of solvent, we devise the following reasoning:

if 44 g of CO₂ contains 12 g of C

then 0.872 g of CO₂ contains X g of C

X = (0.872 × 12) / 44 = 0.238 g of C

if 18 g of H₂O contains 2 g of H

then 0.089 g of H₂O contains Y g of H

Y = (0.089 × 2) / 18 = 0.00989 g of H

And now, we can find the mass of chlorine:

mass of sample = mass of C + mass of H + mass of Cl

mass of Cl = mass of sample - mass of C - mass of H

mass of Cl = 1.30 - 0.238 - 0.00989

mass of Cl = 1.05 g

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combustion reaction

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4 years ago

Jonathan conducts an experiment to determine what solutes readily dissolve in water. He places 3 tablespoons of potting soil int

mariarad [96]

Answer:

A. Mixture

Explanation:

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3 years ago