Given the reaction at 101.3 kPa and 298 K: hydrogen gas + iodine gas -> hydrogen iodide gas This reaction is classified as
Answers
Answer:
Endothermic, because heat is absorbed.
Explanation:
Related Questions
Water is densest at 4°C. What is that temperature on the Kelvin scale?
It has been determined that the body can generate 5500 kJ of energy during one hour of strenuous exercise. Perspiration is the body’s mechanism for eliminating this heat. What mass of water would have to be evaporated through perspiration to rid the body of the heat generated during 2 hours of exercise? (The heat of vaporization of water is 40.6 kJ/mol.)
These two compounds are in the liquid phase at 293 K a. Br₂ and Hg b. Cl2 and F2 c. NH4^{+} and H₃O^{+} d. Fe and Co e. Diamond and graphite
The most abundant gases in the atmosphere are _____. trace gases variable gases greenhouse gases primary gases
Answers
This chemical is known to turn into alcohol when reacted with water.
molecules of water are
there in 1g of water CH₂)
Answers
Answer:
3.3345 x 10^22
Now you can calculate easily the number of water molecules present in 1 g of water. Calculation follows
18 g of water contains 1 mol of water molecules.
or 18 g of water contains 6.022 x 10^23 water molecules.
or 1 g of water contains (6.022 x 10^23)/ 18 water molecules and the number comes out to be 3.3455 x 10^22.
So the number of water molecules present in 1 g of water is 3.3455 x 10^22.
I
Hope this helps you
B. A 2 kg pot at 120°C
C. A 5kg pot at 25°C
D. A 2 kg pot at 25°C
Answers
Final answer:
The 2 kg pot at 25°C has the least thermal energy because it has both a smaller mass and a lower temperature than the other options.
Explanation:
The thermal energy of an object is related to both its mass and its temperature. In this case, we are considering iron pots of different masses and temperatures. Given the options, the 2 kg pot at 25°C would have the least thermal energy. This is because it has both a smaller mass and a lower temperature than all the other options listed.
The thermal energy is calculated by multiplying the mass, specific heat, and change in temperature. An object with a smaller mass and lower temperature would therefore have less thermal energy.
Learn more about Thermal Energy here:
#SPJ5
Answer: D. A 2 kg pot at 25C.
Explanation:
Answers
The overall total would be (3-) charge
Answers
Answer: 1) absorbed
Explanation:
As a chemical bond is formed either by transfer of electrons or sharing of electrons, in order to break the forces of attraction among atoms, energy must be absorbed.
Energy is produced or released when a chemical bond is formed.
Energy is never destroyed, it converts from one form to another.
To break a chemical bond, energy must be .
Further explanation:
The attraction existing between atoms and molecules that facilitate the formation of various chemical compounds is termed as a chemical bond. It is formed either due to electron transference or by electron sharing between the bonded atoms. The chemical bond formed as a result of electron transfer from one atom to another is known as an ionic bond. The bond formed by the mutual sharing of electrons is called a covalent bond.
Endothermic process
The basic meaning of “endo” is “in”. These processes need energy from the surroundings, generally in the form of heat. Photosynthesis, evaporation of water, sublimation of dry ice, and melting of ice are some of the examples of endothermic processes.
Exothermic process
The general meaning of “exo” is “out”. These processes release energy from the system to the surroundings in the form of heat. Combustion of fuels, thermite reactions, nuclear reactions, and neutralization reactions are some examples of exothermic processes.
Since bond breaking is an endothermic reaction, energy must be supplied or absorbed from the surroundings to the system. Therefore, option (1) is the correct answer.
Learn more:
- Which of these is an extensive property? brainly.com/question/1398514
- Which of the phase changes is an exothermic change? brainly.com/question/1875234
Answer details:
Grade: High School
Chapter: Chemical reactions
Subject: Chemistry
Keywords: chemical bond, ionic bond, covalent bond, exothermic, endothermic, in, out, heat, photosynthesis, melting of ice, thermite reactions, neutralization reactions.
Answers
Final answer:
Magnesium oxide (MgO) is an ionic compound formed by the transfer of electrons from magnesium to oxygen, resulting both atoms being electronically stable. Its properties include having high melting and boiling points, being a good electrical insulator but a thermal conductor.
Explanation:
Magnesium oxide, often referred to as 'MgO,' is a compound comprised of two different elements: magnesium and oxygen. It is a type of ionic compound because it is formed by a metal, magnesium, and a non-metal, oxygen. This creation occurs through a process called ionic bonding, where the magnesium atom effectively donates two electrons to the oxygen atom. Consequently, both atoms achieve a stable electronconfiguration.
In its solid state, MgO takes a form of a white, crystal-like substance. It's generally known for its high melting and boiling points, reflecting the strong ionic bonds in oxide structure. Furthermore, the compound stands out for being a good electrical insulator, but a thermal conductor.
Learn more about Magnesium Oxide here:
#SPJ6