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pishuonlain [190]
2 years ago
15

For the reaction:

Chemistry
1 answer:
Sonja [21]2 years ago
5 0

1mol H_2O requires 44kJ heat

Moles of water

  • Given mass/Molar mass
  • 9/18
  • 1/2
  • 0.5mol

Heat required

  • 0.5(44)
  • 22kJ
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Elemental iodine (I 2) is a solid at room temperature. What is the major attractive force that exists among different I 2 molecu
Ulleksa [173]

Explanation:

As I_{2} is a covalent compound because it is made up by the combination of two non-metal atoms. Atomic number of an iodine atom is 53 and it contains 7 valence electrons as it belongs to group 17 of the periodic table.

Therefore, sharing of electrons will take place when two iodine atoms chemically combine with each other leading to the formation of a covalent bonding.

Hence, weak forces like london dispersion forces will be present between a molecule of I_{2}.

The weak intermolecular forces which can arise either between nucleus and electrons or between electron-electron are known as dispersion forces. These forces are also known as London dispersion forces and these are temporary in nature.

thus, we can conclude that london dispersion force is the major attractive force that exists among different I_{2} molecules in the solid.

7 0
4 years ago
the mass number of a chronium atom is 52 and it has 24 protons. how many neutrons does this atom have?
arlik [135]
Hello,

The answer is "28 neutrons".

Reason:

The element Chromium has:

Protons:24
Neutrons:28
Electrons:24

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit 


4 0
3 years ago
Which of the following choices is and example of a capital good
drek231 [11]

<u>Answer:</u>

An example of a capital good is "the government will open another public school in the area".

<u>Explanation:</u>

A capital good or complicated products and systems or (CoPS) is a reliable commodity used in the manufacturing of goods and services. These are one of three kinds of consumer commodities, while the other two are property and labor.

The three are also commonly referred to as primary production factors.They are recorded on a company's balance sheet as assets, and can be depreciated over time. Capital goods instances include furniture, buildings, machinery, equipment and fixtures.

7 0
4 years ago
Assuming the atom is neutral, which atom is shown below?
olasank [31]
The answer is argon I didn't choose randomly like everyone else
3 0
3 years ago
Read 2 more answers
In matter results in a change in its identity and properties.
FrozenT [24]

Answer:

The chemical change in matter is results in a change in its identity and properties.

Explanation:

There are toe type of changes physical change and chemical change.

The chemical change change in matter lead to lost its identity and properties.

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible

These changes occur due to chemical reactions

These may not be observed with naked eye

Example:

Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood

Boiling of egg: that change the chemical composition of protein in the egg .

The reaction of Hydrogen and oxygen:  

H 2 (g)  + O 2  (g) -------------------------------------> 2H 2O  (l)

7 0
4 years ago
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