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
horrorfan [7]
3 years ago
6

If an endothermic process absorbs 256j how many kilocalories are absorbed

Chemistry
2 answers:
Finger [1]3 years ago
8 0
There are several units for expressing energy, Most common are joules and kilocalories.

The conversion factor of joule to kilocalories is 
 1 kilo calorie  = 4184 J
∴ x kilo calorie = 256 J

x = \frac{256}{4184} = 0.0611 kilo calories

Thus, 256 J = 0.0611 kilocalories
astra-53 [7]3 years ago
5 0

Answer: 0.0612 kcalories

Explanation:

Endothermic processes are those processes in which heat is absorbed and exothermic processes are those processes in which heat is released.

Standard units for heat measurement are Joules and calories wherein

1 joule = 0.239 calorie.

As 1 Joule is equivalent to 0.239 calorie

256 Joules are equivalent to=\frac{0.239}{1}\times 256=61.2calories

Now 1 cal = 0.001 kcalories

Therefore 61.2 calories=\frac{0.001}{1}\times 61.2=0.0612kcal

You might be interested in
what are some snacks i can make that go with egg nog (please provide recipe) (will give brainilest for a good answer)​
Anit [1.1K]

Answer:

Cream butter and sugar. Beat in eggnog, baking soda and nutmeg. Gradually add flour and mix well. Cover and chill 1 hour. On a lightly floured surface, roll out half of the dough to 1/8-in. thickness. Using floured 3-1/2-in. cookie cutters, cut into desired shapes; place on ungreased baking sheets. Repeat with remaining dough.

Explanation:

eggnog crumble cookies they are so good

8 0
3 years ago
What is the name of the molecular compound IF7?
puteri [66]
That would be Iodine Heptafluoride.

Hope this helps!
5 0
3 years ago
Read 2 more answers
H2 + O2 -&gt; 2H2O <br> balanced or unbalanced pls help
Sidana [21]

Answer:

Unbalanced

Explanation:

The reaction equation is given as:

             H₂  +  O₂  →   2H₂O

The given reaction flouts the law of conservation of mass and it is not balanced. To know a reaction that is balanced, the number of atoms on both sides of the expression must be the same;

                                             Number of moles

                         Reactants                                             Products

Hydrogen                2                                                            4

Oxygen                   2                                                            2

We see that the hydrogen atoms are not balanced.

7 0
3 years ago
Use a spreadsheet and construct curves for the following titrations. Calculate potentials after the addition of 10.00, 25.00, 49
Lena [83]
Yo you uo i don't really knwo i'm really sootbdiskdis
6 0
3 years ago
When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was
lesya692 [45]

Answer:

Chilling the hydrogen peroxide solution  

Explanation:

The MnO₂ is acting as a catalyst.

Chilling the hydrogen peroxide solution reduces the average kinetic energy of the H₂O₂ molecules.

Fewer of them will have enough kinetic energy to overcome the activation energy of the reaction. The rate will decrease.

A is wrong. Using a larger amount of solution does not increase the number of H₂O₂ molecules that can reach the surface of the catalyst per second. There is no effect on the rate.

B is wrong. Increasing the mass of the cube increases its surface area. More molecules of H₂O₂ can reach the surface of the catalyst per second. The rate increases.

D is wrong. Smashing the cube into pieces vastly increases the surface area, so the rate increases

6 0
4 years ago
Other questions:
  • Identify the variable that is manipulated in an experiment.
    15·2 answers
  • Compound a, c8h10, undergoes nitration to give 2 products. The 1h nmr spectrum of a shows a complex five-proton multiplet at 7.2
    8·1 answer
  • Why is it hard to breathe at higher elevations
    8·2 answers
  • Fill out the following regarding the element
    7·1 answer
  • Need help with these two, solve only the ones you can though :D
    13·1 answer
  • Based on the illustration below, explain how the different organ systems work together.
    10·1 answer
  • The diagram and data below represent gas and the conditions of pressure, volume, and temperature of the gas in a rigid cylinder
    9·1 answer
  • This chart lists four elements from the periodic table.
    13·2 answers
  • What are the three important things needed for combustion to occur ?
    6·1 answer
  • A chemist divides a large sample of a mixture into three smaller portions. each of these portions contains different ratios of t
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!