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3 years ago

What is the phase change from liquid to gas?

Chemistry

2 answers:

padilas [110]3 years ago

7 0

Answer:

Explanation:

vaporization is the process

romanna [79]3 years ago

3 0

Vaporization of a sample of liquid is a phase transition from the liquid phase to the gas phase. There are two types of vaporization: evaporation and boiling. Evaporation occurs at temperatures below the boiling point, and occurs on the liquid's surface.

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Why does the second row of the periodic table not have a d block section

Dmitry [639]

Answer:

Explanation:

There is only room for eight electrons in the second electron shell, so there can only be eight elements in this period, and no room for another section.

7 0

3 years ago

Part A Transmutation is the process of transforming one element into another through nuclear reactions. What will be the nuclide

S_A_V [24]

Answer: The isotope produced after the transmutation process of Cf-249 and C-12 is $_{104}^{257}\textrm{Rf}$

Explanation:

Transmutation is defined as the process where one chemical isotope gets converted to another chemical isotope. The number of protons or neutrons in the isotope gets changed.

The chemical equation for the reaction of Californium-249 nucleus with Carbon-12 nucleus follows:

$_{98}^{249}\textrm{Cf}+_6^{12}\textrm{C}\rightarrow _{Z}^{A}\textrm{X}+4_0^1\textrm{n}$

In a nuclear reaction, the total mass and total atomic number remains the same.

To calculate A:

Total mass on reactant side = total mass on product side

249 + 12 = A + 4

A = 257

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

98 + 6 = Z + 0

Z = 104

Hence, the isotope produced after the transmutation process of Cf-249 and C-12 is $_{104}^{257}\textrm{Rf}$

5 0

3 years ago

What are the type of bones structure in the skeletal system

Nikolay [14]

Components of the Skeletal System. The skeletal system is composed of four main fibrous and mineralized connective tissues : bones, ligaments, tendons, and joints. Bone: A rigid form of connective tissue that is part of the skeletal system of vertebrates and is composed principally of calcium.

5 0

3 years ago

Read 2 more answers

A gas is heated from 298 K to 367 K while its volume changes from 2.5 L to 3.9 L. If the initial pressure of the gas is 1.1 atm,

Gnesinka [82]

PV=nRT is the formula to use.

8 0

2 years ago

Which of elements would you expect to form the following with copper? Substitutional solid solution with complete solubility Sub

Kipish [7]

Answer:

Element Atomic Radius (nm) Crystal Structure Electronegativity Valence

Cu 0.1278 FCC 1.9 +2

C 0.071

H 0.046

O 0.060

Ag 0.1445 FCC 1.9 +1

Al 0.1431 FCC 1.5 +3

Co 0.1253 HCP 1.8 +2

Cr 0.1249 BCC 1.6 +3

Fe 0.1241 BCC 1.8 +2

Ni 0.1246 FCC 1.8 +2

Pd 0.1376 FCC 2.2 +2

Pt 0.1387 FCC 2.2 +2

Zn 0.1332 HCP 1.6 +2

The answers to the question are

(a) Copper will form substitutional solid solution with complete solubility with

Ni due to their very similar size, equal valency and similar electronegativities as well as Pd, and Pt but less likely with aluminium due to size and valency difference

(b) Copper will form substitutional solid solution of incomplete solubility with Ag, Al, Co, Cr, Fe, Zn

C, H, O due to the large difference between the size of copper atomic radius and the smaller atomic radii of C, H and O

Explanation:

Substitutional solid solution rules

the following are the Hume-Rothery rules for substitutional solid solutions:

1. Less than 15%difference between the atomic radius of the solute and solvent:

2. Similarity in the crystal structures of solute and solvent;

3. The valency of the solvent and solute must be similar before they can be said to be completely soluble in each other.

A lower valency metal is more likely to dissolve in one higher valency.

4. The electronegativities of the solute and solvent should be similar a wide variation in electronegativity will lead to the formation of intermetallic compounds rather than a solid solutions.

3 0

3 years ago