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fgiga [73]
2 years ago
12

Which choice correctly describes the subatomic particles in the isotope 44ca?

Chemistry
1 answer:
Ksenya-84 [330]2 years ago
7 0

Answer:

20 protons, 20 electrons and 24 neutrons

Explanation:

In isotopes, the number of neutrons change, changing the mass number (of the atom)

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Convert 9.32x 10 23ª atoms of au to moles of au
7nadin3 [17]

Answer:

\huge\boxed{\sf no.\ of\ moles = 1.55\ moles }

Explanation:

<u>Given:</u>

Number of atoms = 9.32 \times 10^{23} atoms

Avogadro's Number = 6.023 \times 10^{23} atom / mol

<u>Required:</u>

Moles = ?

<u>Formula:</u>

\displaystyle No.\ of\ moles = \frac{no. \ of \ atoms }{avogadro's \ no.}

<u>Solution:</u>

\displaystyle no. \ of \ moles = \frac{9.32\times 10^{23}}{6.023 \times 10^{23}}

no. of moles = 1.55 moles

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
5 0
3 years ago
___ describes the forces that exist between liqiuds and different molecules
Lapatulllka [165]

Answer:

intermolecular forces

8 0
3 years ago
What is the difference between ionic and covalent compounds?
k0ka [10]
<h3><u>Answer;</u></h3>

D. All the above

  • Covalent compounds are always poor conductors of electricity while ionic compounds conduct electricity well when melted or dissolved.
  • Covalent compounds can be solid, liquid or gas, but ionic compounds are solids.
  • In covalent compounds the elements present are usually close together on the periodic table whereas in ionic compounds they are usually well separated.
<h3><u>Explanation;</u></h3>
  • <u>Ionic compounds are compounds that are formed from strong electrostatic interactions between ions.</u> Ionic bonding occurs between a nonmetal, which acts as an electron acceptor, and a metal, which acts as an electron donor. The atoms involved in ionic bonding lose or gain electrons and form positively or negatively charged ions.
  • <em><u>Ionic compound are good conductors of electricity both in molten and aqueous form,. while covalent compound are poor conductors of electricity.</u></em>
  • <u>Covalent compounds on the other hand are compounds that have bonds where electrons are shared between atoms.</u> These types bonds mostly occur between nonmetals or between two atoms of the same element.
8 0
4 years ago
Describe the energy of the products in comparison to the energy the atoms had when the were wandering around the room free.
Over [174]

Answer: The atoms of the solid products are tightly packed whereas those in gas are loose.

Explanation:

Atoms in the solid structure are linked to each other by strong force of attraction and they collectively form an three-dimensional structure. The binding of the atoms form the shape of the solid product. The gas exhibit free atoms in it. The atoms are not linked to one another by strong force of attraction. The atoms as a part of gas have higher energy as those present in the solid products. So, the atoms of the gas wander freely as compared to those in the solid products.

7 0
3 years ago
Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12
LuckyWell [14K]
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8 0
4 years ago
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