1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
garik1379 [7]
3 years ago
6

Suppose that 1.06 g of rubbing alcohol (C3H8O) evaporates from a 72.0 g aluminum block. If the aluminum block is initially at 25

∘C∘C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25 ∘C∘C. The heat of vaporization of the alcohol at 25 ∘C∘C is 45.4 kJ/molkJ/mol, the specific heat of aluminum is 0.903 J/g⋅∘CJ/g⋅∘C.
Chemistry
1 answer:
Ksenya-84 [330]3 years ago
4 0

Answer:

The final temeprature of the block is 12.71 °C

Explanation:

Step 1: Data given

Mass of C3H8O = 1.06 grams

Mass of aluminium block = 72.0 °C

The initial temperature of the aluminium block = 25.0 °C

The alcohol vaporizes at 25 ∘C.

The heat of vaporization of the alcohol at 25 ∘C = 45.4 kJ/mol,

The specific heat of aluminum is 0.903 J/g∘C

Step 2: Calculate moles C3H8O

Moles C3H8O = mass C3H8O / molar mass C3H8O

Moles C3H8O = 1.06 grams / 60.1 g/mol

Moles C3H8O = 0.0176 moles

Step 3: Calculate energy

Energy = 45.4 kJ/mol * 0.0176 moles

Energy = 0.799 kJ = 799 J  gained by the alcohol and lost by the Al

Step 4: Calculate the change of temeprature

Q = m*c*ΔT

ΔT = Q / (m*c)

ΔT = 799 J / (72.0*0.903)

ΔT = 12.29 °C

. Step 5: Calculate the final temperature

T2 = 25.0 °C - 12.29 = 12.71 °C

The final temeprature of the block is 12.71 °C

You might be interested in
Which graph shows the relationship between the temperature and volume of agas according to Charles's law?Volume vs. Temperature
solmaris [256]
Graph D.

Charles's law states that at the same pressure, the Volumen of a gas is proportional to its temperature (absolute temperature).

This is

V = K T, where K is the constant of proportionallity.

You can also write it in the form

V1 / V2 = T1/ Ts

When Temperature rise Volumen rise in a proportional way. If Temperature doubles Volumen doubles, if Tempearature is decreases to on third, Volume will decrease to one third.
5 0
4 years ago
When light strikes a transparent material, most of the light is absorbed or reflected.
Monica [59]
When light strikes a transparent material, most of the light passes through it it doesn't absorb or reflect it 
4 0
3 years ago
Read 2 more answers
What happens when you heat iodine and ammonium chloride?
DiKsa [7]
Test tube of ammonium chloride (NH4Cl) being heated over a bunsen burner flame. Ammonium chloride decomposes readily when heated, but condenses in the cooler area at the top of the test tube. This is a reversible reaction, where the ammonium chloride decomposes into the gases ammonia (NH3) and hydrogen chloride (HCl).
5 0
3 years ago
Read 2 more answers
Which atoms in the pair has the larger atomic radius ? Help please !!
Ne4ueva [31]

A

1. Potassium, K.

2. Calcium, Ca.

3. Gallium, Ga.

4. Carbon, C.

5. Bromine, Br.

6. Barium, Ba.

7. Silicon, Si.

Explanation:

4 0
2 years ago
Read 2 more answers
Does a spring tide always happen in the season of spring
grin007 [14]
THE SPRING TIDE DOES NOT HAVE ANYTHING TO DO WITH THE SEASON OF SPRING AND IT OCCURS MOSTLY IN THE FALL
4 0
3 years ago
Other questions:
  • Please help me with this
    10·2 answers
  • 23.Explain why children often look like their parents.
    15·2 answers
  • HELP PLEASE!!!! Identify the position of each chemical family on the periodic table
    5·1 answer
  • How many moles of hydrogen will be produced in this reaction when 34.5 moles of hydrogen iodide are decomposed?
    11·1 answer
  • Is Himalayan mountain still forming today? Explain plzzzz:/
    14·2 answers
  • How many neutrons does an atom with the atomic number 80 and mass number 170 contain?
    5·1 answer
  • Which chemical is oxidized?<br><br> A) Mg<br> B) O2<br> C) MgO
    13·1 answer
  • A process that is a physical change.
    5·1 answer
  • Gizmo Student Exploration: Periodic Trends<br> Does anyone have the answer key?
    13·1 answer
  • NEED THIS ASAP PLEASE HELP!! WILL GIVE 10 PTS!! WILL MARK BRAINLIST!!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!