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
Lana71 [14]
3 years ago
14

While conducting a lab experiment, Ali calculated that 1.20 E6 Joules of heat were needed to melt 18.5 kilograms of an unknown s

ubstance at its melting point. What is the latent heat of fusion of the substance
Chemistry
1 answer:
nordsb [41]3 years ago
7 0

Answer:

Latent heat of fusion of the substance is 6.49\times 10^{4}J/kg

Explanation:

Latent heat of fusion denotes amount of energy (heat) per unit mass required to melt a solid material at constant temperature and pressure i.e. at it's melting point

Here amount of heat required = 1.20\times 10^{6}J

Mass of unknown substance being melted = 18.5 kg

So, latent heat of fusion of the substance = (required heat energy to melt)/(mass of the unknown substance) = \frac{1.20\times 10^{6}}{18.5}J/kg=6.49\times 10^{4}J/kg

So, latent heat of fusion of the substance is 6.49\times 10^{4}J/kg

You might be interested in
Which type of atom has the strongest attraction for electrons in bond formation
castortr0y [4]
The atom with the strongest attraction for electrons in bond formation is the atom with the most positive charge since an electron has a negative charge. Unlike attracts like. Among these, Sr and ba has 2+ and has the greatest charge but ba<span> has a stronger electron affinity (decreasing from top to bottom). answer is barium.</span>
4 0
3 years ago
What can we do to fix the climate in greenland?
Anna35 [415]

Answer:

Greenland is a huge island that is covered with ice, due to warming this ice has begun to melt, reaching a point where more ice is lost per year than is gained.

The temperature levels on earth have increased abnormally since the industrial revolution, that is since CO2 emissions increased. The extra CO2 released into the atmosphere does not allow the heat generated from the earth to be released into space, so the earth has begun to heat up more than normal, causing temperatures to rise.

To avoid this, CO2 emissions should be reduced, this could be achieved by using clean energy to generate electricity, such as solar or wind energy. Also if industries improve their processes to reduce the CO2 they produce. Another way is to reduce livestock farming as this industry also releases high amounts of CO2.

As individuals, from our homes what we can do is to reduce energy consumption if it is generated with fossil fuels, for example turn off the lights if we are not in the rooms, unplug appliances that we are not using, do not use products that come from polluting industries, among others.

8 0
2 years ago
The atmosphere insulates the planet by trapping in
Helga [31]
Heat

resources: my brain :)
5 0
3 years ago
A mass spectrometer has determined the mass and abundances of all isotopes of an unknown element. The first isotope has a mass o
shepuryov [24]

Answer:

I believe it is Potassium (K)

Explanation:

I did the math on a calculator and it was the closest atomic mass to potassium.

5 0
4 years ago
3 natural chemicals a part of our life
Mademuasel [1]
Sodium chloride, methane gas and water
4 0
3 years ago
Read 2 more answers
Other questions:
  • A rigid canister holds 50.0 L of helium gas at 32.0°C and 49.9 kPa. The gas is cooled until the pressure reaches 14.2 kPa. What
    5·1 answer
  • How many grams are in 2.75 moles of Calcium
    5·2 answers
  • Which statements describe the principles of the big bang theory? Check all that apply.
    12·2 answers
  • All matter is made up of atoms that are in continuous, random motion
    9·1 answer
  • What is the proper structure for 3-methylpentane? draw the molecule on the canvas by choosing buttons from the tools (for bonds)
    8·1 answer
  • What is the difference between a polar and a nonpolar bond?And how can i figure out if its polar or nonpolar in a bond question?
    9·2 answers
  • 10. How many moles of Ne are in a 0.50L tube at 200kPa and 50 °C? 11,60<br>​
    10·1 answer
  • Many scientists, including Joseph Priestly, hypothesized that fuels lost mass as they burned due to the loss of a substance call
    15·1 answer
  • Hydrogen sulfide (H2S) is a gas that smells like rotten eggs. It can be produced by bacteria in your mouth and contributes to ba
    7·1 answer
  • Which term correctly describes the phenomenon that causes the difference in precipitation at Mt. Charleston and Las Vegas?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!