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2 years ago

Why doesn’t a broken wineglass spontaneously fix itself, from a thermodynamic point of view?

2 answers:

8 0

The answer is the option 3.) Fixing a wineglass requires a large decrease in entropy.

Entropy is a termodynamical variable and it is defined as the degree of disorder of the system.

As per the second law of thermodynamics the spontaneous changes only occur when the entropy increases.

Fixing the broken glasses by itself meant to decrease the entropy spontaneusly which violate the principle or second law of thermodynamics. So, it is not possible.

ale4655 [162]2 years ago

5 0

Fixing a wineglass will require a large decrease in entropy.

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Which of the following statements best describes what happens to water during vaporization?

ss7ja [257]

Answer: im pretty sure its D

Explanation:

8 0

3 years ago

Read 2 more answers

A reaction at -6.0 °C evolves 786. mmol of sulfur tetrafluoride gas. Calculate the volume of sulfur tetrafluoride gas that is co

borishaifa [10]

Answer:

V of Sulfur tetrafluoride is 17.2 L

Explanation:

Given data;

T = -6°C = 267K [1° C = 273 K]

n = 786 mmol of SF4 which is 0.786 mol

P = 1 atm

from ideal gas law we have

PV = nRT

where n is mole, R is gas constant, V is volume

$V = \frac{nRT}{P}$ $V = \frac{0.786 mol \times 0.082 atmL/mol K \times* 267K}{1atm} = 17.2 L$

V of Sulfur tetrafluoride is 17.2 L

6 0

2 years ago

The elements in Groups 1 AU) and 7A(17) are all quite reactive. What is a major difference between them?

Yuliya22 [10]

Explanation:

Elements of group 1A are known as alkali metals. Elements of this group are lithium, sodium, potassium, rubidium, cesium, and francium.

All these elements are metals and every element of this group has 1 valence electron. So, in order to attain stability they will readily lose their valence electron.

Hence, elements of group 1A are very reactive.

On the other hand, elements of group 7A are also known as halogen group. Elements of this group are fluorine, chlorine, bromine, iodine, and astatine.

All these elements are non-metals and every element of this group has 7 valence electrons. So, in order to completely fill their octet these elements gain 1 electron from a donor atom.

Therefore, these elements are alo reactive in nature.

But the major difference between elements of group 1A and group 7A is that elements of group 1A are metals but elements of group 7A are non-metals.

8 0

3 years ago

I need answers plz btw D says ice crystals

tangare [24]

Answer:

B. Hydrogen and oxygen molecules

General Formulas and Concepts:

Chemistry - Reactions

Reactants are always on the left side of the arrow
Products are always on the right side of the arrow

Explanation:

Step 1: Define

Reaction RxN: 2H₂ + O₂ → 2H₂O

Step 2: Identify

Reactants: H₂ and O₂

Products: H₂O

7 0

1 year ago

34 points please help!!!!!!!!

Shtirlitz [24]

Answer:

(i think) it is A difference in 1 unit is a 10X difference in concentration For example; a liquid with pH of 3 is 10X more acidic than a liquid with a pH of 4. Therefore, a liquid with a pH of 3 is stronger.

Explanation:

8 0

2 years ago