How does hydrogen bonding affect water as it becomes colder and eventually freezes? (1 point)

The solid-state transition of Sn(gray) to Sn(white) is in equilibrium at 18.0 ˚C and 1.00 atm, with an entropy change of 8.8 J K

Vika [28.1K]

Answer:

Transition temperature = 13 C

Explanation:

ΔS(transition) = 8.8 J/K.mol

ρ(gray) = 5.75 g/cm³ = 5750 kg/m³

ρ(white) = 7.28 g/cm³ = 7280 kg/m³

ΔP = 100 atm = 100 x 101325 = 10132500 Pa

M(Sn) = 118.71g/mol = 118.71 x 10⁻³ kg/mol

T(i) = 18 C, T(f) = ?

We know that

G = H - TS, where G is the gibbs free energy, H is the enthalpy, T is the temperature and S is the entropy

H = V(m) x P, hence the equation becomes

G = V(m) x P - TS

The change in Gibbs free energy going from G(gray) to G(white) = 0 as no change of state takes place hence it can be said that

ΔG(gray) - ΔG(white) = 0

replacing the G with it formula shown above we can arrange the equation such as

0 = V(m)(gray) - V(m)(white) x ΔP - (ΔS(gray) - ΔS(white)) x ΔT

solving for ΔT we get

ΔT = {V(m)(gray) - V(m)(white) x ΔP}/(ΔS(gray) - ΔS(white))

ΔT = {M(Sn)(1/ρ(gray) - 1/ρ(white) x ΔP}/(ΔS(gray) - ΔS(white))

ΔT = {118.71 x 10⁻³ x {(1/5750) - (1/7280)} x 10132500}/(8.8)) = 5.0 C

ΔT = T(initial) - T(transition)

T(transition) = T(initial) - ΔT = 18 - 5 = 13 C

5 0

3 years ago

Periods on the periodic table represent elements_____.

AlekseyPX

A period in the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells

8 0

3 years ago

Read 2 more answers

When 3.00 moles of hydrogen molecules and 1.50 moles of oxygen molecules react, they form 3.00 moles of water according to the r

Luden [163]

Answer:

The answer to your question is: 6 grams of hydrogen

Explanation:

Data

3.0 moles of hydrogen

1.5 moles of oxygen

3 moles of water

# of grams of hydrogen required to form 3 moles of water?

Equation

H₂ + 1/2 O₂ ⇒ H₂O

3 mole 1.5 moles 3 moles

Atomic weight of H₂ = 2 g

1 mole ----------------------- 2 g

3 moles --------------------- x

x = 3(2)/1 = 6 grams of hydrogens

3 0

3 years ago

What is the symbol of the species with 23 protons and 21 electrons?

9966 [12]

$V^{2+}$ is the symbol of the species with 23 protons and 21 electrons.

Hence, option F is correct.

<h3>What is a proton?</h3>

Electrons are a type of subatomic particle with a negative charge. Protons are a type of subatomic particle with a positive charge.

If it has 23 protons, then its proton number (also know as its atomic number) is 23. You can look that symbol up in your periodic table.

If it has 21 electrons then it has a net charge of 23(+) - 21. So we know the ionisation state of the species, and we can record that as a superscript after the symbol for the species.

Hence, $V^{2+}$ is the symbol of the species with 23 protons and 21 electrons.

Learn more about the proton here:

brainly.com/question/1252435

#SPJ1

8 0

3 years ago

Which of the following is one part of a chemical formula

puteri [66]

Answer:

3. the symbol of each element in the substance

Explanation:

6 0

2 years ago