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
Liula [17]
3 years ago
6

Thermodynamic PropertiesProperty Value

Chemistry
1 answer:
igomit [66]3 years ago
8 0

Answer:

1,620 J.

Explanation:

  • The amount of heat added to a substance (Q) can be calculated from the relation:

<em>Q = m.c.ΔT.</em>

where, Q is the amount of heat released from ethanol cooling,

m is the mass of ethanol (m = 60.0 g),

c is the specific heat of ethanol in the liquid phase, since the T is cooled below the boiling point and above the melting point (c = 1.0 J/g °C),

ΔT is the temperature difference (final T - initial T) (ΔT = 43.0 °C – 70.0 °C = - 27.0 °C).

<em>∴ Q = m.c.ΔT</em> = (60.0 g)(1.0 J/g °C)(- 27.0 °C) = - 1620 J.

<em>The system releases 1620 J.</em>

You might be interested in
Match each of the following topical dosage forms with its correct definition.
Dmitry [639]

Answer:

cream - contains a higher proportion of oil than water

ointment - dr4g mixed in approximately equal proportions of oil and water

i don't know about the other two sorry

8 0
2 years ago
How many molecules are in 1 mol of the chemical equation shown above
aivan3 [116]
There's 6.022×10^23 particles in 1 mole of anything

like there is 1000 grams in 1 kilogram of anything
7 0
4 years ago
Complete the mechanism for the base-catalyzed opening of the epoxide below by adding any missing atoms, bonds, charges, nonbondi
worty [1.4K]

Complete Question:

check the first image for complete part of the question

Answer and Explanation:

Epoxide is a three membered ring made up of two carbon atoms and one oxygen atom. Epoxides are cyclic ethers. Due to its ring size, it is highly strained and very reactive. Epoxide ring opening takes place with respect to addition of acid and base.

Ring opening of epoxide with acid:  

In the presence of base, the nucleophile attacks the epoxide ring at more substituted site and inverse stereochemistry takes place.(check file 2 attached)

Ring opening of epoxide with base:  

The backside attack of nucleophile takes place in less substituted site and then it undergoes protonation to form a product.

(check file 2 attached)

3 0
3 years ago
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. how many protons does boron have?
Ede4ka [16]
Atomic number is equal to protons and electrons, so the answer is 5
7 0
4 years ago
Read 2 more answers
What’s the temperature at the boiling and freezing point of water in fanrenheit
Dominik [7]

Answer:

Boiling is 212* Freezing is 32*

Explanation:

It simple facts

5 0
3 years ago
Other questions:
  • Calculate the molar concentration of the Br⁻ ions in 0.51 M MgBr2(aq), assuming that the dissolved substance dissociates complet
    13·1 answer
  • Synthesize Information In a multistep process, cells can combine the reactants glucose (C6H12O6) and oxygen (O2) to form the pro
    13·1 answer
  • Which option correctly explains a metallic bond
    5·1 answer
  • Which of the following is true of atoms with very high electronegativity?
    5·1 answer
  • What are two examples of a soulution?
    9·1 answer
  • What is the formula of Barium Carbonate?​
    14·2 answers
  • Using the accepted value for the volume of 1 gram of water at the temperature of the room that you reported above, what is the a
    12·1 answer
  • How many atoms are in a mole of atoms
    11·1 answer
  • 10.7g of C2H2 --&gt; g CO2
    15·1 answer
  • The diagram shows the movement of particles from one end of the container to the opposite end of the container.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!