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3 years ago

Which of the following is true of the relationships between heat of fusion and heat of vaporization?

Chemistry

1 answer:

klio [65]3 years ago

6 0

Answer:

The heat of vaporization is typically larger than the heat of fusion

Next question answer:

The liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.

Explanation:

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When KNO3 dissolved in water, what is the intermolecular attraction between NO3 ions

Snezhnost [94]

Ion-dipole forces

H2O has hydrogen bonding, which is a form of dipole-dipole forces, and NO3- is an ion, so the intermolecular attraction is ion-dipole.

4 0

3 years ago

Formula units in 0.0300 moles of cacl2

spin [16.1K]

Answer:

no of formula unit = $0.03\times 6.023\times 10^{23}=1.8\times 10^{22}$

Explanation:

atomic mass of CaCl2 = 40 + 2×35.5 = 111 g.

no of formula unit = no of moles × Avagadro number

= $0.03\times 6.023\times 10^{23}=1.8\times 10^{22}$

3 0

4 years ago

What is the pH of a solution with a concentration of 7.6 × 10–7 M H3O+?

Setler [38]

Answer:

Ph = 6.12....

here ya go

Explanation:

7 0

3 years ago

3. You have 28.5 grams of Carbon. How many atoms is this?

Anton [14]

1 gram of carbon = 12 atoms ..

As per u r question..

28.5 × 12 = 342..

<h2 /><h2>If this answer helps you mark as brainlist..</h2>

6 0

3 years ago

Calculate the molarity of the final solution of Erythrocin B (MW 879.9 g/mol) if a .5028g sample is dissolved in water diluted t

Mashcka [7]

Answer:

2.857 × 10⁻⁴ M

Explanation:

First, we will calculate the molarity of the solution 1.

M = mass of solute / molar mass of solute × liters of solution

M = 0.5028 g / 879.9 g/mol × 0.100 L

M = 5.714 × 10⁻³ M

We can find the concentration of the final solution using the dilution rule.

C₁ × V₁ = C₂ × V₂

C₂ = C₁ × V₁ / V₂

C₂ = 5.714 × 10⁻³ M × 5 mL / 100 mL

C₂ = 2.857 × 10⁻⁴ M

7 0

3 years ago