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
natima [27]
2 years ago
11

The enthalpy of fusion of methanol (CH3OH) is 3.16 kJ/mol. How much heat would be absorbed or released upon freezing 25.6 grams

of methanol? 1. 2.52 kJ absorbed 2. 3.95 kJ absorbed 3. 0.253 kJ absorbed 4. 2.52 kJ released 5. 3.95 kJ released
Chemistry
1 answer:
Verdich [7]2 years ago
6 0

Answer:

There is  2.52 kJ of energy released (option 4)

Explanation:

Step 1: Data given

The enthalpy of fusion of methanol (CH3OH) is 3.16 kJ/mol

Mass of methanol = 25.6 grams

Molar mass of methanol = 32.04 g/mol

Step 2: Calculate moles of methanol

Moles methanol = mass methanol / molar mass methanol

Moles methanol = 25.6 grams / 32.04 g/mol

Moles methanol = 0.799 moles

Step 3: Calculate energy transfer

Energy  transfer = moles * enthalpy of fusion

Energy = 0.799 moles * 3.16 kJ/mol

Energy = 2.52 kJ released

There is  2.52 kJ of energy released

You might be interested in
Bobby found that water has a high boiling point and concluded this was because water intermolecular forces. Based on the data, i
Art [367]

Yes, Bobby is correct

Explanation:

Anomalously high boiling point of water is as a result of the intermolecular forces between the molecules of water.

The intermolecular forces found in water are the very strong hydrogen bonds.  The bulk of the physical properties of matter are due to the intermolecular forces that they possess.

  • Hydrogen bonds are stronger than van der waals forces and they are more effective in binding molecules together into larger units.
  • Substances whose molecules join via hydrogen bonds have higher boiling points i.e lower volatility than those with van der waals forces.
  • Hydrogen bond is actually an electrostatic attraction between hydrogen atom of none molecule and the electronegative atom(O or N or F) of a neighboring molecule.

Learn more:

Hydrogen bonds brainly.com/question/10602513

#learnwithBrainly

5 0
3 years ago
S8 + 12 O2 → 8 SO3<br>How many moles of SO3 can be produced from 6 moles of O2?
MA_775_DIABLO [31]

Answer:

4 moles of SO3 will be produced from 6 moles of oxygen.

Explanation:

From the reaction given

S8 + 12 O2 ----> 8 SO3

12 moles of oxygen reacts to form 8 moles of SO3

if 6 moles of oxygen were to be used instead, it has been reduced to half of the original mole of oxygen used. Then the moles of SO3 will also be reduced to half.

6 moles of O2 will yield 4 moles of SO3

12 moles = 8 moles

6 moles = ?

? = 6 * 8 / 12

? = 48/ 12

? = 4 moles of SO3.

8 0
3 years ago
What if benzene sulphonyl chloride react with tertiary amine???? Name this reagent???​
aniked [119]

Explanation:

<h3>Hinsberg reagent is an alternative name for benzene sulfonyl chloride. This name is given for its use in the Hinsberg test for the detection and distinction of primary, secondary, and tertiary amines in a given sample. This reagent is an organosulfur compound.</h3>
6 0
2 years ago
Define the law conservation of mass​
denis23 [38]

Answer:

Explanation:

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so the quantity can neither be added nor be removed.

hope it helps

7 0
3 years ago
How many mg of salt are in a 2.78 kg bag of salt?
igomit [66]

Answer:

2,780,000mg

Explanation:

Using the Metric Staircase photo provided, you can calculate how many mg there are in 2.78 kg by simply moving the decimal point six places to the right, since the "Kilo" step takes six places to move to the "Milli" step.

2.78 kg

---------------

2 7 8 0 0 0 0 .

we can see that the decimal point is moved to the right six places.

Answer:

2,780,000mg

7 0
2 years ago
Other questions:
  • Which of the following is controlled by the nervous system
    6·1 answer
  • Is there any way to predict the exact location of any one marble drop on the target?
    5·1 answer
  • What is the molarity of a solution containing 8.0 moles of solute in 120mL of solution?
    10·1 answer
  • How would Mg change to gain a noble gas structure?<br><br> lose 2 electrons<br> gain 6 electrons
    10·2 answers
  • Do pure substances have the same chemical and physical properties
    15·1 answer
  • What is the correct formula for the
    7·2 answers
  • 21+ Cl2 → 12+201 -
    9·1 answer
  • What are the two major types of cells that occur in nature?
    12·2 answers
  • HELPP!<br> how many grams are in 1.50 x 10(24) atoms of copper?
    12·1 answer
  • A solution is made by dissolving 4.8 moles of salt in 1.6L of solution. What is the molarity
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!