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3 years ago

Question

Chemistry

2 answers:

AveGali [126]3 years ago

7 0

A plateau is a flat, elevated landform that rises sharply above the surrounding area on at least one side. Plateaus occur on every continent and take up a third of the Earths land. They are one of the four major landforms, along with mountains, plains, and hills.

Mariana [72]3 years ago

4 0

Island, this is a landform surrounded on all sides by water (kasatochi island) It isnt a plateau because a plateau is touching land on one of 4 sides. hope this helps:)

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A 100-g piece of metal initially at T = 75C is submerged in 100 g of water initially at T = 25C. The specific heat capacity of i

san4es73 [151]

I’m not so sure but I think it’s b

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3 years ago

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lesya692 [45]

Answer:

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Explanation:

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2 years ago

Find the fugacity coefficient of a gaseous species of mole fraction 0.4 and fugacity 25 psia in a mixture at a total pressure of

Oksana_A [137]

<u>Answer:</u> The fugacity coefficient of a gaseous species is 1.25

<u>Explanation:</u>

Fugacity coefficient is defined as the ratio of fugacity and the partial pressure of the gas. It is expressed as $\bar{\phi}$

Mathematically,

$\bar{\phi}_i=\frac{\bar{f_i}}{p_i}$

Partial pressure of the gas is expressed as:

$p_i=\chi_iP$

Putting this expression is above equation, we get:

$\bar{\phi}_i=\frac{\bar{f_i}}{\chi_iP}$

where,

$\bar{\phi}_i$ = fugacity coefficient of the gas

$\bar{f_i}$ = fugacity of the gas = 25 psia

$\chi_i$ = mole fraction of the gas = 0.4

P = total pressure = 50 psia

Putting values in above equation, we get:

$\bar{\phi}_i=\frac{25}{0.4\times 50}\\\\\bar{\phi}_i=1.25$

Hence, the fugacity coefficient of a gaseous species is 1.25

8 0

2 years ago

There are two types of physical changes and chemical reactions- endothermic and exothermic. On the diagram below, which picture

Agata [3.3K]

Answer:

it is b because its releases heat in to all directions and not b because it staying inside and not releasing anything :)

Explanation:

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3 years ago

Read 2 more answers

O que é VAPORIZAÇÃO, CONDENSAÇÃO, SUBLIMAÇÃO, FUSÃO, SOLIDIFICAÇÃO

ipn [44]

Answer:

Fusão: a substância volta do sólido para o líquido. Condensação: a substância muda de um gás para um líquido. Vaporização: a substância muda de líquido para gás. Sublimação: a substância muda diretamente de um sólido para um gás sem passar pela fase líquida.

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3 years ago