During which change of state would the volume of a substance increase the most? 1.deposition 2.melting 3.vaporization 4.sublimation

Answers

Answer 1
Answer:

The answer is:

Sublimation

The explanation:

The most state has the high volume is the gas state.

So here the answer is between vaporization and sublimation???

and when the sublimation is: the change of the material from the solid state to the gas state directly without pass to liquid state from the solid first then to the gas

and the vaporization is : The change of the material from the liquid state to the gas state by heating Ex: water vaporize at 100°

here, the answer is sublimation because the difference of volume which resulted from this process is more than the volume resulted from vaporization.

Answer 2
Answer:

Answer: The correct answer is Option 4.

Explanation:

All these processes are the physical processes which occurs between the phases of matter.

Solid state is the phase where particles are closely arranged and the volume of this state is less.

Liquid state is the phase where particles are not closely arranged and the volume of this state is more than solid but less than gaseous state.

Gaseous state is the phase where particles are loosely arranged and this state has the largest volume.

  • Deposition is the physical process in which gaseous state is converted to solid state. The volume of the substance decreases.
  • Melting is the the physical process in which solid state is converted to liquid state. The volume of the substance increases.
  • Vaporization is the physical process in which liquid state is converted to gaseous state. The volume of the substance increases.
  • Sublimation is a physical process in which solid states is converted to gaseous state. The volume of the substance increases and in this case, the increment in volume is the maximum.

Hence, the correct answer is Option 4.


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Answers

The formulas indicate the number of elements in each compound. Notice the difference in ratios: 
NaCl is 1:1, while H2O is 2:1.

A _____ change occurs when a substance changes phase

Answers

when a substance changes phase it is called a PHYSICAL change

Answer:

It undergoes a physical change.

Explanation:

Make a hypothesis:Why do you think Hydrogen is with the Group 1 elements rather than with the rest of the nonmetals directly next to Helium above Group 17?

Answers

Explanation:

Hydrogen's placement on the periodic table is a subject of debate among chemists. It's in Group 1 because it has one electron in its outermost shell, like the alkali metals. However, it's not a typical alkali metal and has some nonmetallic properties, like being a diatomic gas. Its unique position results from historical reasons and its ability to both lose and gain electrons, making it difficult to classify as a typical metal or nonmetal. Hydrogen's placement reflects its anomalous nature and the periodic table's limitations in fully capturing its properties.

First, because the elements of the periodic table are arranged in order of increasing proton numbers. Secondly, hydrogen would belong in group 1 instead of 17 because the elements of a group have the same number valence electrons. Hydrogen has one valence electron so it would best fit into group one rather than group 17 which has seven valence electrons

What is the molecular formula of caffeine, given that it has an empirical formula of C_4H_5N_2O and a molar mass of 194 g/mol?

Answers

Answer:

Empirical formula : C4 H 5 N2O \n </p><p>Empirical \: molar \: mass \: of \: the \n compound \: obtain : \n 12×4+5+2×14+16=97 \n \n </p><p>Given \: the \: molar \: mass \: of \n Caffeine = 194.2 \n \n </p><p></p><p>n= 194.2 /97=2 \n </p><p></p><p>Thus \: Formula \: of \: \n Caffeine = (C 4H5 N 2 O)2

What ions are in water all the time?

Answers

Answer:

(Ca2 +, Mg2 +, Na+, and K+) and four major anions ( , , SO 4 2 - , and Cl-) with ionic forms of N, P, Fe, and other trace elements at lower concentrations (Livingstone 1963, Meybeck 1979) (Table 4.7).

When the Sun’s radiant energy falls on Earth’s oceans, it causes water to change state by evaporating. Which form of energy does water vapor have?

Answers

Answer:

The correct answer is chemical potential energy.

Explanation:

When the radiation energy of the Sun falls on the surface of the oceans, it makes the water to modify its state by undergoing evaporation. The form of energy exhibited by the water vapor is chemical potential energy.  

When the energy from the Sun falls on the surface of the water, a change in the state takes place, that is, from liquid to gas. This gas elevates above in the form of water vapor, and this is a chemical change. This vapor possesses the tendency to get transformed into other forms. Thus, the energy present within the water vapor is known as chemical potential energy.  

Water vapor possesses latent energy. this form of heat energy is the force that drives the water cycle in nature.