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
Anarel [89]
3 years ago
13

PLEASE HELP FAST!! How much energy (in calories) is need to melt 3.0 moles of ice?

Chemistry
1 answer:
Viktor [21]3 years ago
4 0

Answer:

Energy

Explanation:

The heat required to change the phase of a substance is given by the equation:

Q= mL (Q= Heat required, m= mass, L= Latent Heat of Fusion/Evaporation/Anything else).

So, according to your values:

Q= 3.0 kg x 333 kJ/Kg

So, Q= 999 kJ

You might be interested in
When an atom of lithium loses an electron the atom becomes a
Ymorist [56]
Positive ion with a radius smaller than the radius of the atom
5 0
3 years ago
Read 2 more answers
Of the following, which is most likely to result after a farmer sprays his crops with pesticides?
Anastasy [175]
Of the following, which is most likely to result after a farmer sprays his crops with pesticides?D. A neighbor’s well tests positive for pesticides. 

Carbon dioxide is a colorless, odorless gas. Why is it considered a pollutant? 
A. It gets into natural waters and kills fish.
6 0
3 years ago
Read 2 more answers
Ben is pushing a small trolley 10 N to the north and but Gary is pushing the trolley 5 N to the south. What is the total applied
andrew-mc [135]

Answer:

The total applied force on the trolley is 5 N toward the North.

Explanation:

In this problem, Ben is pushing the trolley to north and Gary is pushing it to south. So both the forces are acting 180° opposite to each other. As force is a vector quantity, the net force or total force acting on any object should be calculated by vector addition of number of forces along with their directions. So in this case, if we consider the force Ben is applying as F1 and the force Gary is applying as F2 on the trolley. Then the net or total force acting on the trolley will be F1-F2. This is because, F1 and F2 are acting opposite to each other in direction.Thus, Total force acting on the trolley = 10 N - 5 N.

So the total force acting on the trolley is 5 N and it is toward the north direction.

5 0
4 years ago
Compared to visible light, an electromagnetic wave that has a higher wavelength will also have ________.
Rudik [331]

I took the test to find out it's not A or D so it's either B or C.

6 0
3 years ago
Read 2 more answers
What is meant by the term compound? Provide an example
PIT_PIT [208]

Answer:

I hope it helps

Explanation:

  • <em>When two or more elements chemically combine in a fixed ratio by mass, the obtained product is known as a compound. Compounds can be defined as substances consisting of 2 or more different types of elements in a fixed ratio of its atoms. When the elements combine, some individual property of the elements is lost and the newly formed compound has new properties.Chemical Formula: Compounds are represented by their chemical formula. A chemical formula is a symbolic representation of the proportions of atoms that constitute a particular chemical compound.The chemical formula of water is H2O which shows two atoms of hydrogen and one atom of oxygen have combined to form one molecule of H2O. The chemical formula for common salt is NaCl which shows one atom of sodium and one atom of chlorine combine to form one molecule of NaCl.</em>
6 0
3 years ago
Other questions:
  • The outer planets, referred to as the gas giants, contain and satellites.
    7·1 answer
  • Read this for the next two problems: When a 125 g obsidian rock is placed into a graduated
    15·1 answer
  • What is the mass in grams of 0.375 mol if the element potassium, k?<br><br>​
    6·2 answers
  • Louis Pasteur developed the germ theory of disease, which states that many diseases are caused by microorganisms. Had scientists
    7·2 answers
  • PLEASE HELP
    12·1 answer
  • Kati was in the kitchen when she heard a crash. She went into her bedroom and found her window broken and a baseball lying on th
    7·2 answers
  • NEED ASAP!
    10·1 answer
  • The following is an example of which type of boundary?
    12·1 answer
  • Ionic compounds form between two metals true
    15·1 answer
  • Dominique goes to the doctor for bone aches. The doctor tells him
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!