All categories

3 years ago

How is specific heat capacity related to a change in state of matter?

1 answer:

4 0

The heat capacity or thermal capacity of a body is the quotient between the amount of heat energy transferred to a body or system in any process and the change in temperature it experiences. In a more rigorous form, it is the energy necessary to increase the temperature of a certain substance by one temperature unit. [1] It indicates the greater or lesser difficulty that said body presents in experiencing changes in temperature under the supply of heat. It can be interpreted as a measure of thermal inertia. It is an extensive property, since its magnitude depends not only on the substance but also on the amount of matter in the body or system; therefore, it is characteristic of a particular body or system. For example, the heat capacity of the water in an Olympic-size swimming pool will be greater than that of the water in a glass. In general, heat capacity also depends on temperature and pressure.

Explanation:

espero te sirva, me demore en un chingo en traducirte....

sinceramente eres la primera persona a la que le tradusco la tarea xd

I'm Latin American

do you want to be my friend

You might be interested in

SeF6 1. Lewis Structure 2. Perspective drawing 3. Number of atoms bonded to central atom 4. Number of non-bonding electron pairs

Anarel [89]

The answer is- $SF_{6}$ is octahedral in electronic and molecular geometry with 6 Fluorine atoms bonded to central atom S.

Lewis structures are the diagrams in which the valence electrons of the atoms of a compound are arranged around the atoms showing the bonding between the atom and the lone pair of electrons existing in the molecule.

Determine the molecular geometry of $SF_{6}$ .

Valence Shell Electron Pair Repulsion theory is commonly known as VSEPR theory and it helps to predict the geometry of molecules.
According to this theory, electrons are arranged around the central atom of the molecule in such a way that there is minimum electrostatic repulsion between these electrons.
Now, calculate the total number of valence electrons in $SF_{6}$ .

$Valence\ electrons\ in\ SF_{6}= Valence\ electrons\ in\ S +\ 6(Valence\ electrons\ in\ F)$

Valence electrons of S = 6

Valence electrons of F = 7

Thus, the valence electrons in $SF_{6}$ are-

$Valence\ number\ of\ electrons\ in\ SF_{6} = (6) + 6(7) = 48\ electrons.$

The Lewis structure of $SF_{6}$ is - (Image attached).
In the structure, the number of atoms bonded to central atom (S) = 6.
Number of non-bonding electron pairs on the central atom = 0 (as all the valence electrons are bonded to F).
Electronic geometry in case of 6 bond pairs is octahedral.
Molecular geometry us also octahedral with bond angles 90°.
Central atom is sp3d2 hybridised.
$SF_{6}$ is a non-polar molecule.

To learn more about Lewis structures visit:

brainly.com/question/12307841?referrer=searchResults

#SPJ4

7 0

1 year ago

What is the term for an object's strength of motion?

Andrei [34K]

I'm pretty sure its momentum

3 0

4 years ago

4. On Saturday. raggie had 16 minutes

My name is Ann [436]

3 minutes are left (16-13=3)

8 0

3 years ago

Read 2 more answers

Which of the following has the strongest buffering capacity? A. H2O B. 0.1 M HCl C. 0.1 M carbonic/bicarbonate (H2CO3/HCO3-) at

enyata [817]

Explanation:

(A) As we know that carbonic acid ( $H_{2}CO_{3}$ ) and Sodium bicarbonate ( $NaHCO_{3}$ ) forms an acidic buffer.

Therefore, pH of an acidic buffer is given by Hendeerson-Hasselbalch equation as follows.

pH = $pK_{a} + log(\frac{[Salt]}{[Acid]})$ ........... (1)

So mathematically, if [Salt] = [Acid] then $\frac{[Salt]}{[Acid]}$ = 1 .

And, $log (\frac{[Salt]}{[Acid]})$ = 0

Therefore, equation (1) gives us the following.

pH = $pK_{a}$ (when acid and salt are equal in concentration)

Hence, $pK_{a}$ of $H_{2}CO_{3}$ (carbonic acid) is 6.35.

And, with this we have following results.

In (A) and (D) we have the case \frac{[NaHCO_{3}]}{[H_{2}CO_{3}]}[/tex] i.e. [Salt] = [Acid].

Hence, for the cases pH = $pK_{a}$ = 6.35.

(B) $[NaHCO_{3}]$ = 0.045 M and, $[H_{2}CO_{3}]$ = 0.45 M

Hence, pH = $6.35 + log([NaHCO_{3}][[H_{2}CO_{3}])$

= $6.35 + log(\frac{0.045}{0.45})$

= 6.35 + (-1)

= 5.35

Therefore, it means that this buffer will be most suitable buffer as it has pH on acidic side and addition of slight excess base will not affect much of its pH value.

(C) $[NaHCO_{3}]$ = 0.45 M $[H_{2}CO_{3}]$

= 0.045 M

So, pH = $6.35 + log(\frac{[NaHCO_{3}]}{[H_{2}CO_{3}]})$

= $6.35 + log(\frac{0.45}{0.045})$

= 6.35 + (+1)

= 7.35

This means that pH on Basic side makes it no more acidic buffer.

5 0

3 years ago

A characteristic of a substance that may be observed or measured without changing the composition of the substance is a(n) ___ p

ivann1987 [24]

Answer:

c physical

Explanation:

5 0

3 years ago