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2 years ago

If the change in Gibbs free energy for a process is positive, the corresponding change in entropy for the universe will be

1 answer:

4 0

If the change in Gibbs free energy for a process is positive, the corresponding change in entropy for the universe will be positive.

<h3>What is Gibbs free energy?</h3>

This is defined as the energy used by a substance involved in a chemical reaction.

The Gibbs free energy and entropy has a direct relationship which is why a positive gibbs free energy will result in a corresponding positive entropy.

Read more about Gibbs free energy here brainly.com/question/9179942

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3 years ago

What phase change occurs during evaporation?

vlabodo [156]

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3 years ago

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If you burn 53.8 g of hydrogen and produce 481 g of water, how much oxygen reacted?

olga2289 [7]

The reaction:
2 H 2 + O 2 → 2 H 2 O
2 Hydrogen molecules react with 1 Oxygen molecule to create 2 molecules of water.
We have to convert 53.8 g of Hydrogen into moles:
53.8 : 2.02 g / moles = 26.63 moles
2 moles H 2 ↔ 1 mole O 2
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3 years ago

The action of some commercial drain cleaners is based on the following reaction: 2 NaOH(s) + 2 Al(s) + 6 H2O(l) → 2 NaAl(OH)4(s)

Blababa [14]

Answer : The volume of $H_2$ gas formed at STP is 7.86 liters.

Explanation :

The balanced chemical reaction will be:

$2NaOH(s)+2Al(s)+6H_2O(l)\rightarrow 2AnAl(OH)_4(s)+3H_2(g)$

First we have to calculate the moles of $Al$ .

$\text{Moles of }Al=\frac{\text{Mass of }Al}{\text{Molar mass of }Al}$

Molar mass of Al = 27 g/mole

$\text{Moles of }Al=\frac{6.32g}{27g/mole}=0.234mole$

Now we have to calculate the moles of $H_2$ gas.

From the reaction we conclude that,

As, 2 mole of $Al$ react to give 3 mole of $H_2$

So, 0.234 moles of $Al$ react to give $\frac{0.234}{2}\times 3=0.351$ moles of $H_2$

Now we have to calculate the volume of $H_2$ gas formed at STP.

As, 1 mole of $H_2$ gas contains 22.4 L volume of $H_2$ gas

So, 0.351 mole of $H_2$ gas contains $0.351\times 22.4=7.86L$ volume of $H_2$ gas

Therefore, the volume of $H_2$ gas formed at STP is 7.86 liters.

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3 years ago

Using the periodic table entry below, match the phrases with their corresponding values.

Mashutka [201]

Atomic number 79
atomic mass 197
number of orbits 6
number of neutrons 118
number of electrons in n=3 18
number of valence electrons 1
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3 years ago

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