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3 years ago

Explain the difference between extensive properties and intensive properties.

Chemistry

1 answer:

Gnom [1K]3 years ago

5 0

Answer:

Extensive properties depend on de mass, intensive properties not.

Explanation:

The extensive properties depend on the mass and change with the addition or reducction of the mass.

The intensive properties dont depend on the mass. For example: temperature.

I hope I help you.

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In this question why devide by number of moles ?

ArbitrLikvidat [17]

Because M = mol/L or mL. 15.0 x 0.350/42.0 = M

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3 years ago

Name the two gases that make up most of the air.<br>

ddd [48]

Answer:

Air is mostly gas

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

Explanation:

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2 years ago

Read 2 more answers

Consider the reaction: A (aq) ⇌ B (aq) at 253 K where the initial concentration of A = 1.00 M and the initial concentration of B

Ugo [173]

Answer:

The maximum amount of work that can be done by this system is -2.71 kJ/mol

Explanation:

Maximum amount of work denoted change in gibbs free energy $(\Delta G)$ during the reaction.

Equilibrium concentration of B = 0.357 M

So equilibrium concentration of A = (1-0.357) M = 0.643 M

So equilibrium constant at 253 K, $K_{eq}= \frac{[B]}{[A]}$

[A] and [B] represent equilibrium concentrations

$K_{eq}=\frac{0.357}{0.643}=0.555$

When concentration of A = 0.867 M then B = (1-0.867) M = 0.133 M

So reaction quotient at this situation, $Q=\frac{0.133}{0.867}=0.153$

We know, $\Delta G=RTln(\frac{Q}{K_{eq}})$

where R is gas constant and T is temperature in kelvin

Here R is 8.314 J/(mol.K), T is 253 K, Q is 0.153 and $K_{eq}$ is 0.555

So, $\Delta G=8.314\times 253\times ln(\frac{0.153}{0.555})mol/K$

= -2710 J/mol

= -2.71 kJ/mol

4 0

3 years ago

HELP please quick HELP

stiks02 [169]

What do you need help with

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3 years ago

Which statement best compares the energy involved in melting with the energy involved in boiling for a given liquid?

Nana76 [90]

Answer:

Energy is added to the particles in each change, but boiling requires more energy than melting because the attractions must be completely overcome.

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3 years ago