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
xxMikexx [17]
3 years ago
5

How much energy is required to melt a 500. gram block of iron? The heat of vaporization is 6090 J/g and the heat of fusion is 24

7 J/
g. 3.05x106 J 1.23x105 J 6.09x103 J 2.47x102 J
Chemistry
2 answers:
N76 [4]3 years ago
6 0

Give them brainliest ^^^

galben [10]3 years ago
3 0

The mass of iron block is 500 g. The amount of energy required to melt the iron block needs to be calculated. Melting means conversion of solid to liquid thus, heat of fusion is used which is 247 J/g.

From heat of fusion, 247 J of energy is released by melting 1 g of iron block. Thus, the amount of heat released by melting 500 g of iron rod will be:

H= 247 J/g× 500 g=1.23×10^{5}

Hence, option B is correct.

You might be interested in
What is chemical reaction?​
Natali5045456 [20]

Answer:

a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

Or

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

4 0
3 years ago
Which of the following foods is likely lowest in nutritional value and highest in fat?
bogdanovich [222]
Tomato Suop Creamchsee almonds and pears
6 0
3 years ago
Read 2 more answers
Sugar cannot be separated from sugar solution by filtering explain why?​
alexdok [17]

Answer:

The sugar particles are so small that they have dissolved in the water, and can easily pass through the filter.

5 0
3 years ago
Read 2 more answers
Write a balanced overall reaction from these unbalanced half-reactions sn and ag
loris [4]
Balance each one by adding electrons to make the charges on both sides the same:

Sn--> Sn2+ + 2 e-
Ag+ + 1 e- --> Ag

Now, you have to have the same number of electrons in the two half-reactions, so multiply the second one by 2 to get:

2 Ag+ + 2 e- --> 2 Ag

Now, just add the two half reactions together, cancelling anything that's the same on both sides:

2 Ag+ + Sn --> Sn2+ + 2 Ag

And you're done.
8 0
3 years ago
Which block contains 5 orbitals?
exis [7]
D sublevel because the s sublevel has one orbital, the p sublevel has three orbitals, the d sublevel has five orbitals, and the f sublevel has seven orbitals. In the first period, only the 1s sublevel is being filled.
4 0
3 years ago
Other questions:
  • H+(aq) + OH–(aq) → H2O(l) + 55.8 kJ In this reaction there is conservation of
    5·1 answer
  • If the frequency of a radio station is 88.1 MHz (8.81 × 107 Hz), what is the wavelength of the wave used by this radio station f
    13·2 answers
  • Martina has a sample of an unknown substance, she measures the substance, its mass is 13.5 grams, and its volume is 5cm^3
    5·2 answers
  • Is water wet? If so explain if not also explain please!
    7·2 answers
  • Al2O3; The ___ show the ___ of each atom in the ___
    14·1 answer
  • PLEASE HELP ME IDENTIFY THIS ELEMENT
    10·1 answer
  • Which star is the dimmest HELP PLEASE
    14·2 answers
  • Argue whether this chemical reaction supports or does not support the Law of Conservation of Matter.
    10·1 answer
  • Three examples of<br> solid and gas solution
    8·1 answer
  • 5. What is the overall charge of the electron cloud of the atom?Explain
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!