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3 years ago

How do the properties of compounds compare to the properties of elements from which they are made

Chemistry

1 answer:

deff fn [24]3 years ago

4 0

Answer:

When elements combine in a chemical reaction to form compounds, their individual identity is lost. Thus, the properties of elements change when they form chemical bonds with other elements to form compounds. For example, the compound water is made up of water and hydrogen.

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Leya [2.2K]

Answer:

V₂ = 530.5 mL

Explanation:

Given data:

Initial temperature = 20.0°C

Final temperature = 40.0 °C

Final volume = 585 mL

Initial volume = ?

Solution:

Initial temperature = 20.0°C (20+273 = 293 K)

Final temperature = 40.0 °C (40+273 = 323 K)

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₁ = V₂T₁ /T₂

V₂ = 585 mL × 293 K / 323 K

V₂ = 171405 mL.K / 323 K

V₂ = 530.5 mL

6 0

3 years ago

You discover a chemical reaction that produces 1 moles of valuable propane for every 6 moles of carbon supplied.

Greeley [361]

Here we have to calculate the number of moles of valuable propane can be prepared from 1.8 moles of carbon.

From 1.8 moles of carbon 0.3 moles of propane can be prepared by the reaction.

From 6 moles of carbon (C) 1 moles of valuable propane (C₃H₈) can be prepared.

Thus from 1.8 moles of C we can obtain $\frac{1}{6}$ ×1.8 = 0.3 moles of the propane can be prepared.

Thus the amount of propane produced in this reaction is determined.

8 0

3 years ago

A covalent bond forms a(n) ______________.

DiKsa [7]

The answer is Molecule. After a pair of shared electrons orbit around the nuclei of both atoms

3 0

3 years ago

Read 2 more answers

Assume that the partial pressure of sulfur dioxide, pso2, is equal to the partial pressure of dihydrogen sulfide, ph2s, and ther

xenn [34]

Given:

Sulfur dioxide and dihydrogen sulfide system

Vapor Pressure of water, H2O = 23 torr

P_SO2 = P_H2S

Temperature of the system = 298 K

Assume: Total pressure of the system is 1 atm = 760 torr

If partial pressure of SO2 is equal to the concentration of H2S, then,

760 = 0.5*PSO2 + 0.5PH2S
760 = PSO2

6 0

4 years ago

When the free-energy change (AG) of a reaction is negative, the reaction is said to be: Endergonic Non spontaneous Spontaneous E

Greeley [361]

Answer:

Spontaneous

Explanation:

For a spontaneous reaction , the value for the change in free energy or gibbs' free energy is negative .

The change in free energy , i.e. , ΔG , denotes the maximum amount of usable energy released , as going from initial state , i.e. , the reactant towards the final state , i.e. , the product .

And , the sign of the ΔG , determines whether the reaction is Spontaneous or non Spontaneous or at equilibrium ,

i.e. ,

ΔG < 0 , the reaction is Spontaneous

ΔG > 0 , the reaction is non Spontaneous

ΔG = 0 , the reaction is at equilibrium

For ,

ΔG < 0 , that the reaction proceed without any energy input , hence , it is Spontaneous in nature .

6 0

3 years ago