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
katovenus [111]
3 years ago
11

A) How much energy would be required to melt 500 grams of ice at 0°C to water at 0°C?

Chemistry
1 answer:
baherus [9]3 years ago
4 0

Heat required = Q = 40 kcal

<h3>Further explanation</h3>

Given

mass of 500 g ice

Required

Heat required

Solution

The heat to change the phase can be formulated :  

  • Q = m.Lf (melting/freezing)  
  • Q = m.Lv (vaporization/condensation)  

Lf=latent heat of fusion  

Lv=latent heat of vaporization  

Lf for water = 334 kj/kg=6.01 kJ/mol = 80 cal/g

Phase change(ice to water)

Q=  500 g x 80 cal/g

Q = 40 kcal

You might be interested in
Which of the following is a heterogeneous mixture
jeka57 [31]
Soil. 
Heterogeneous means is can be separated and soil can be taken apart and separated according to its contents. (Rocks, dirt, grass). <span />
7 0
3 years ago
Aluminum can react with oxygen gas to produce aluminum oxide (Al2O3). What type of reaction is this?
Pachacha [2.7K]

It's Synthesis, single replacement is incorrect.

6 0
4 years ago
I need to know all the answers for this homework!!!!
maw [93]

1. 100 C

2. Point B to C is the ices heat capacity

3. During the points D to E the bonds of the water molecules build up enough kinetic energy to break their intermolecular bonds (not intra), which can lead to gas.

4. Between points D and E the energy is being released the energy required is equivalent along the line.

5. Between point E and D the water is converting to water (condensation)

6. Energy is being released 2260 j/g

7. Yes, but only under extreme volumetric pressures

8. D and E or B and C

9. Freezing (the water is also becoming less dense)

10. Melting or if water already, absorbtion of energy

11. released.

5 0
3 years ago
How many grams of oxygen are produced when 1.05 moles of hydrogen gas is<br> produced?
vivado [14]

Answer:

1.058337 grams of hydrogen and 2H2 + O2 ==> 2H2O hydrogen peroxide

mols H2 = grams/molar mass

Using the coefficients in the balanced equation, convert mols H2 to mols O2.

Now convert mols O2 to grams. That's grams mols O2 x molar mass O2.

and it could also produce H2O water but no air but it could make other things

8 0
3 years ago
What did the professer use a catalyst for the flubber experiment
Anettt [7]
In the 1997 movie called, Flubber, the professor used an organic catalyst and a little touch of electricity to make flubber. The organic substance is not known.
Thank you for posting your question here at brainly. I hope the answer helps.
7 0
3 years ago
Other questions:
  • Consider the equation: 4AI+30² → 2AI²O³ Is this equation balanced? Why or why not?
    15·1 answer
  • 9)
    7·1 answer
  • Balance the chemical equation given below, and determine the number of grams of MgO that are needed to produce 20.0 g of Fe2O3.
    8·1 answer
  • Explain why components that are naturally found in air can be considered air pollutants.
    12·1 answer
  • How many magnesium atoms are there in one molecule
    7·2 answers
  • If a container were to have 24 molecules of C5H12 and 24 molecules of O2 initially, how many total molecules (reactants plus pro
    6·1 answer
  • The electron domain and molecular geometry of NF₃ are ________.
    10·1 answer
  • Which circult is a serles circult?​
    14·1 answer
  • 3) What are the three types of sedimentary rocks?
    9·1 answer
  • After transferring the electron, which ion is negatively charged? ________________ Why is the ion negatively charged? __________
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!