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2 years ago

Property by virtue of which metals can be beaten into shapes

1 answer:

6 0

The property which allow the metals to be hammered into thin sheets is called malleability. Gold and silver are the best malleable metals. It is due to the property of malleability that metals can be bent to form objects of different shapes by beating with a hammer.

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the heat of fusion of acetone is 5.7 kJ/mol. Calculate to two significant figures the entropy change when 6.3 mol of acetone mel

shtirl [24]

<u>Answer:</u> The entropy change of the process is $2.0\times 10^2J/K$

<u>Explanation:</u>

To calculate the entropy change for different phase at same temperature, we use the equation:

$\Delta S=n\times \frac{\Delta H_{f}}{T}$

where,

$\Delta S$ = Entropy change

n = moles of acetone = 6.3 moles

$\Delta H_{f}$ = enthalpy of fusion = 5.7 kJ/mol = 5700 J/mol (Conversion factor: 1 kJ = 1000 J)

T = temperature of the system = $-94.7^oC=[273-94.7]=178.3K$

Putting values in above equation, we get:

$\Delta S=\frac{6.3mol\times 5700J/mol}{178.3K}\\\\\Delta S=201.4J/K=2.0\times 10^2J/K$

Hence, the entropy change of the process is $2.0\times 10^2J/K$

4 0

3 years ago

What is the mass of a 0.23 L substance, if it has density of 1.90 g/mL?

jolli1 [7]

Answer:

437 g

Explanation:

as mass = density × volume

8 0

2 years ago

Which compound would you expect to be soluble in the nonpolar solvent carbon disulfide?

ch4aika [34]

Answer:

hexane C6H14

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Explanation:

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8 0

2 years ago

Who discovered significance of 6.022 x 10 to the 23 power

Masja [62]

6.02 x 10^23 is Alvogrado's number (Amedio Alvogrado is the name). This formula is determined to find the amount of particles within a substance by a mole.
I hope this helps!

6 0

2 years ago

PLEASE HELP!!!!!!! CHEMISTRY!!!!

AnnZ [28]

Answer:

dude im sorry for your loss best of luck to you and your answer search

Explanation:

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2 years ago