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Lera25 [3.4K]
4 years ago
13

Could anyone give me the answer to this plz 20 points

Chemistry
1 answer:
svetoff [14.1K]4 years ago
6 0
13 - Periodic table
14 - Dimitri mandeleev
15 - groups


Mark me brainiest pls it right answer
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_______ is the amount of heat necessary to raise the temperature of 1 gram of a substance by 1 degree Kelvin. A. A calorie B. En
Maksim231197 [3]
<h2>The required option d) "specific heat" is correct.</h2>

Explanation:

  • To raise the temperature of any substance or material of certain mass to respective temperature it requires some amount of heat.
  • Specific heat is the amount of heat necessary to raise the temperature of the substance of 1 gram to 1 Kelvin.
  • It is the amount of heat which is required to raise the temperature per unit mass to per unit temperature.
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3 years ago
I WILL GIVE BRAINLIEST!!!!
lions [1.4K]

The correct answer is option c, that is, nucleus.  

A usual atom comprises three subatomic particles, that is, the neutrons, protons, and electrons. According to Bohr's model, the majority of the mass of an atom is in the nucleus, that is, a small, dense region at the center of each atom, comprising nucleons.  

The nucleons incorporate neutrons and protons. All the positive charge of an atom is found in the nucleus and arises from the protons, the neutrons are neutrally-charged, and the electrons are the negatively charged particles found outside of the nucleus.  


3 0
4 years ago
The periodic trend for electronegativity is similar to what other trend?
Lesechka [4]
D. The trend for first ionization energy
6 0
3 years ago
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To dissolve one substance in another, thus forming a solution, three things must occur: The forces holding solute particles toge
aniked [119]

To dissolve one substance, attractions between solute and solvent particles must be formed, steps involved are:

<h3><u>Formation of a solution:</u></h3>
  • A physical process, not a chemical one, takes place when a solute and a solvent combine to produce a solution.
  • In other words, by applying the right separation techniques, both the solute and the solvent may be recovered in chemically unaltered forms.
  • It is claimed that two substances are entirely miscible when they combine to create a single homogenous phase in all ratios. Water and ethanol mix well, much like different gas combinations do.
  • When two substances, like oil and water, are fundamentally insoluble in one another, they are said to be immiscible.
  • We have already talked about several examples of gaseous solutions, such as the atmosphere of Earth.
  • Thus, a system that has two or more compounds homogeneously (in a single phase) dissolved in it is called a solution. It is the homogenous mixture formed when a solute dissolves in a solvent.

To know more about solutions, refer to:

brainly.com/question/1616939

#SPJ4

4 0
2 years ago
How does The cooling rate of magma or lava affect the text of the igneous rock that forms ?
Anvisha [2.4K]

Hello there!,

Well a Igneous rock forms of course by the rate that it cools down in. If there is slow magma cooling then there will be larger crystals. Fast cooling leads to smaller crystals.

Hope I helped!

8 0
3 years ago
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