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
Alex17521 [72]
3 years ago
11

If a substance melts at 20oC, what is its freezing point?

Chemistry
1 answer:
shutvik [7]3 years ago
4 0

Answer:

It is difficult, if not impossible, to heat a solid above its melting point because the heat that ... in a solid are packed in a regular structure that is characteristic of that particular substance.

<h3>#carryONlearning </h3>

You might be interested in
What is the best way to combine these sentences? The frogs front feet have 4 toes. Its back feet have 5 toes
mrs_skeptik [129]

Answer:

The frog has 4 toes on each foot in the front, and 5 toes on each foot in the back.

Explanation:

8 0
3 years ago
Read 2 more answers
What is the total number of protons in an atom with the electron configuration 2-8-18-32-18-1.
svp [43]

The total number of protons in this atom is 79 because an atomic number of an element is equal to the number of protons. Here, the atomic number is 79 after adding the given electronic configuration.

What are Protons?

Every atom has a proton, a subatomic particle, in its nucleus. The particle possesses an electrical charge that is positive and opposite to the electrons.

What is Atom?

A nucleus plus one or more electrons bound to the nucleus make up an atom. The quantity of protons or electrons in an element's atom determines how different it is from other similar elements. The atomic number of an element, which serves as its primary identification, is the sum of its protons or electrons.

What is Electronic configuration?

The arrangement of electrons in atomic or molecular orbitals within an atom, molecule, or other physical structure is known as the electron configuration.

Hence, the total number of protons in this atom is 79, after adding 2 + 8 + 18 + 32 + 18 + 1.

To know more about Atom, check out:

brainly.com/question/6258301

#SPJ4

5 0
1 year ago
Benzene exists as a resonance hybrid and its bonds exhibit characteristics that are halfway between single and double bonds. Res
gregori [183]

Answer:

Explanation:

We can only talk about resonance hybrid for a compound in which more than one structure is possible based on its observed chemical properties.

There are compounds whose chemical properties can not be satisfactorily explained on the basis of a single chemical structure. In the case of such compounds, we invoke the idea of resonance.

A resonance hybrid is a single structure drawn to represent a given chemical specie which exhibits resonance behaviour and can otherwise be represented on paper in the form of an average of two or more chemical structures separated each from the next by a double-headed arrow.

5 0
3 years ago
When 1 mol of KBr(s) decomposes to its elements, 394 kJ of heat is absorbed. (a) Write a balanced thermochemical equation.
VladimirAG [237]

The balanced thermochemical equation is

KBr ------- K + 1/2 Br2

<h3>What is thermochemical equation? </h3>

A Thermochemical Equation is defined as the balanced stoichiometric chemical equation which includes the enthalpy change, ΔH.

The chemical equation for the decomposition of potassium bromide to its constituent elements bromine ans potassium :

KBr ----- K + Br2

The balanced thermochemical equation of the decomposition of potassium bromide to its constituent elements potassium and bromide as follows

KBr ------- K + 1/2 Br2

As the heat is absorbed in this reaction therefore, heat is positive.

Thus, we concluded that the balanced thermochemical equation is

KBr ------- K + 1/2 Br2

learn more about thermochemical equation:

brainly.com/question/2733624

#SPJ4

8 0
2 years ago
What is the mass of one mole of nitrogen atoms?
OLEGan [10]

Answer:

28.0

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Please help!!!! Look at the picture for the question.
    7·1 answer
  • Which ions in flint water caused the protective layer inside the pipes to break down?
    8·1 answer
  • We use oxidation numbers to help us do what?
    5·2 answers
  • If 1.5 moles of copper metal react with 4.0 moles of silver nitrate, how many moles of silver metal can be formed, and how many
    11·2 answers
  • Explain what the atomic number and atomic mass of an element represent. use an example of an element. describe how the atomic nu
    9·1 answer
  • Who else like this????!?!?!?!?!
    15·1 answer
  • Compare the electronegativity of H and O in the polar covalent bonds of a water
    11·1 answer
  • Which of the following would be considered renewable resources? You may choose more than one.
    8·2 answers
  • Ahhhh someone help me with this
    7·1 answer
  • In the nebular hypothesis, why did the nebula start to collapse?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!