CHEMISTRY HIGH SCHOOL

To calculate the amount of heat absorbed as a substance melts, which of the following information is NOT needed?a.
the mass of the substance
c.
the change in temperature
b.
the specific heat of the substance
d.
the density of the sample

Answers

Answer 1
Answer:

To calculate the amount of heat absorbed as a substance melts, the information which we don't need is density.

What is the formula to calculate absorbed heat?

The formula which we used to calculate the amount of involved heat in a chemical reaction is:

Q = mcΔT, where

  • Q = absorbed heat
  • m = mass
  • c = specific heat
  • ΔT = change in temperature

Hence the information which we don't need is density.

To know more about heat absorbed, visit the below link:
brainly.com/question/8828503

#SPJ2
Answer 2
Answer: The answer is d. hope it helps!

Related Questions

How do the boiling points of alkenes and alkynes compare to those of alkanes
PLSSSSSSSSSSSSSSSSSSSSSSSSSS HELP Which of the following best describes physical weathering? (4 points)A series of chemical changes that wears away at rocksThe movement of rocks from one area to anotherAny large-scale event such as volcanic eruptions or earthquakesA process that breaks down large rocks into smaller piec
What is the sum of 0.04321 g + 5.263 g + 2.13 g to the correct number of significant digits
A(n) _______________ compound is a group of atoms held together by chemical bonds.
Summarize the five points of Dalton’s atomic theory, and explain at least one change that occurred to the atomic theory because of further experimentation.Important Points:All matter is composed of very small particles called atoms. All atoms of a given element are identical. Atoms cannot be created, destroyed, or subdivided. Atoms combine with or separate from other atoms. Atoms combine with each other.

Atoms always have a charge of?

Answers

A atom always have a positive charge

Water(H2O) is composed of the same elements as carbon monoxide (CO). How do their properties compare?A. They have the same properties because they have the same arrangement of atoms.
B. They have different properties because the arrangement of atoms is different.
C. They have the same properties because they have the same atoms.
D. They have different properties because they have different atoms.

Answer is B.

Answers

The correct answer of the given question above would be option B. Water is composed of the same elements as carbon monoxide, but their properties compare because they have different properties due to the different arrangement of atoms. Hope this answer helps.

Answer:

B is the answer

Explanation:

I took the test

If a reaction system has come to equilibrium, the concentration of products can be increaseda.
only if it is not reversible.
c.
by applying Le Châtelier’s principle.
b.
only if the temperature is low enough.
d.
under no circumstances.

Answers

If a reaction system has come to equilibrium, the concentration of products can be increased by applying Le Châtelier’s principle. The answer is letter C. The statements "only if it is not reversible",  "only if the temperature is low enough" and "under no circumstances" do not answer the question above.

Which statement best explains water’s ability to dissolve covalent compounds?a. Water can dissolve polar covalent compounds through dipole-dipole interactions.
b. Water can dissolve nonpolar covalent compounds through hydrogen-bonding interactions.
c. Water can dissolve polar covalent compounds through ion-dipole interactions.
d. Water can dissolve nonpolar covalent compounds through dipole-dipole interactions.

Answers

The correct answer for the question that is being presented above is this one: "c. Water can dissolve polar covalent compounds through ion-dipole interactions." The statement that best explains water’s ability to dissolve covalent compounds is that Water can dissolve polar covalent compounds through ion-dipole interactions.

Answer:

a. Water can dissolve polar covalent compounds through dipole-dipole interactions.

Explanation:

It's the correct answer on Edge 2021. If anyone asks, you didn't hear it from me ;)

What is electronegativity

Answers

When first looking at the word electronegativity, we see the word electro at the beginning so it has to do with electrons which have a negative charge.

Electronegativity is a chemical property and it's how much an atom will be attracted to somebody else's electrons. An atom's electronegativity is affected by its atomic number which is the number of protons in its nucleus and how far away the valence electrons are from the nucleus. Valence electrons are the outermost electrons.

Electronegativity is a measure of the tendency of an atom to attack a boding pair of electrons


I hope that's help !

El hielo es una mezcla, elemento o compuesto?

Answers

No, el hielo no es ni elemento o mezla. El hielo es un compuesto, hecho de los elementos H y O
el hielo es in elemento
Other Questions
What is happening in this picture? Look at the food colouring and explain using the following terms: solute, solvent, dissolving, homogenous.​
What types of epithelial cells would you expect to find in an area of the body where diffusion of nutrients needs to occur?1) Cuboidal 2) Columnar3) Squamous​
The reaction below demonstrates which characteristic of a base?CuSO4(aq)+2NaOH(aq)->Cu(OH)2(s)+Na2SO4the ability of bases to release sodium ions into solutionthe ability of bases to release hydrogen ions into solutionthe ability of a base to react with carbonate or bicarbonatethe ability of a base to react with a soluble metal salt
Elements occur in a number of isotopic forms. In this problem, you will learn about the notation used to distinguish different isotopes.How many protons Z and how many neutrons N are there in a nucleus of the most common isotope of silicon, 28/14Si?