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
ipn [44]
3 years ago
15

a sample of substance x that has a mass of 326.0 g releases 4325.8 cal when it freezes at its freezing point. if substance x has

a molar mass of 58.45 g/mol, what is the molar heat of fusion for substance x?
Chemistry
2 answers:
ira [324]3 years ago
8 0
1) Calculate the number of mols,n,  of the substance

n = mass/ molar mass = 326.0 g / 58.45 g / mol = 5.577 moles

2) Calculate the molar heat of fusion as the total heat released by the sample divided by the number of moles

hf = heat released / n = 4325.8 cal / 5.577 moles = 775. 59 cal /mol
aivan3 [116]3 years ago
3 0

A. 1775.6 cal/mo

I have several degrees

You might be interested in
How is a mole like a dozen?
12345 [234]

Answer:

Answer in explanation.

Explanation:

The mole is a unit for counting 6.02 1023 representative particles. The dozen is used to count 12 items.

3 0
4 years ago
Read 2 more answers
What is the electron configuration for Ga
Alex Ar [27]
The electron configuration is Ar 3d10 4s2 4p1.
3 0
4 years ago
Read 2 more answers
A reaction releases 489.34 J of heat how many calories of heat is that equal to 1 cal equals 4.186 J
Verdich [7]
The answer is equal to 115.47 calories. Just devide the amount of heat release by 4.186 J because it is equal to 1 cal
6 0
3 years ago
What element is this? How do you know?
postnew [5]

Atom is the most basic unit of matter. They are the general term used to describe pieces of matter. But a different kind of atom makes up an element.  A combination of atom of different elements creates a molecule. For example, you have water; it has a chemical formula of H2O. If you separate H from O, you have two atoms. Two atoms for hydrogen and one atom for oxygen. However, they are of different elements. And when you combine them to form H2O, you create a molecule.

<span> </span>

4 0
3 years ago
If my primary DNA strand is ATACCGCAA <br> a write the complimentary DNA strand
Liula [17]

Answer:

TATGGCGTT

Explanation:

Complimentary base pairs:

A-T

C-G

Use the other letter for complimentary strands

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which is an example of plasmas in nature? solar cells plasma balls auroras clouds
    9·2 answers
  • Why is water not a good extraction solvent for trimyristin?
    5·1 answer
  • What is the difference between matter and non matter ?
    7·2 answers
  • One of the main characteristics Of a solid is that they__.
    14·2 answers
  • Calculate the mass in amu of 75 atoms of aluminum
    10·1 answer
  • Please help
    14·2 answers
  • Calculate the molar concentration of 4.75 moles of NaCl in<br> 0.50 liters of water?
    10·1 answer
  • Hot air is more / less dense than cooler air. Choose the correct one.
    9·1 answer
  • What is occurring in the image below?
    12·1 answer
  • what is the solubility of ca(oh)2 (s) in water, given that the ksp is 6.5 x 10-6. molar mass of ca(oh)2 is 74.09 g/mol. g
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!