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Westkost [7]
2 years ago
5

How many atoms are contained in 75 g PCl3?

Chemistry
1 answer:
maria [59]2 years ago
8 0
<span>i get 3.19x10^20 atoms 
</span>
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3rd law of thermodynamics..<br><br> 2 Different Examples((Thnks))
VLD [36.1K]

Answer:

See explanation

Explanation:

The third law of thermodynamics states that "the entropy of a perfect crystal of a pure substance approaches zero as the temperature approaches zero" (Wikipedia).

One example of the third law of thermodynamics has to do with steam. Steam is gaseous water. Since it is a gas, its molecules are free to move around therefore its entropy is high. When the temperature of the steam is decreased below 100 degrees, the molecules of steam loose energy and turn into liquid water and do not move as freely as they did in the gaseous state. If the temperature is further decreased to yield ice at zero degrees, the molecules of water are "frozen" in their positions and the entropy of the system decreases to zero.

Also, the ions in ionic crystal solids move around when the substance is in solution or in molten state hence the substance conducts electricity. When the ionic substance is in solid state, the ions do not move about and the entropy of the solid system tends towards zero.

5 0
2 years ago
Ap chem, please help with number 31!!
Leona [35]

Answer:

this old man looks so weird ..

Explanation:

but i m sorry .....u know the reason very well

do u wanna be my friend .

3 0
3 years ago
Identify the following reaction type using the chemical equation below*
OLEGan [10]

Answer:

its C. a combustion reaction

3 0
3 years ago
What is the specific heat capacity of a metal if it requires 177.5 J to change the temperatures of 15.0g of the metal from 25.00
Vikentia [17]

Answer:

The specific heat capacity of a metal is 1.31 J/g°C = C

Explanation:

A classical excersise of calorimetry to apply this formula:

Q = m . C . ΔT

177.5 J = 15 g . C (34°C - 25°C)

177.5 J = 15g . 9°C . C

177.5 J /15g . 9°C = C

1.31 J/g°C = C

3 0
3 years ago
What will be the bond angles for an sp3d2 hybridized atom participating in six identical single covalent bonds
Romashka [77]

Answer:  electrons

Explanation:

5 0
2 years ago
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