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3 years ago

What happens to temperature and kinetic energy of particles during a change of state

1 answer:

3 0

When a substance is changing state, its temperature remains constant. This is because energy is used to increase/decrease kinetic energy of the molecules of the substance, increasing/decreasing the inter-molecular distance and overcoming the energy bonds present between the molecules. Therefore, no energy is used to raise the temperature of the substance and therefore it remains constant

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Which property would most likely be the same when comparing two random samples of copper?

Darya [45]

Answer:

melting point and conductivity

Explanation:

as long as both samples are copper, it will melt at the same time, aswell as conduct electricity the same.

7 0

3 years ago

How many electrons will a non-metal generally have in its outer shell? 1 - 3 1 - 4 4 - 7 8

AlladinOne [14]

They generally have 4 - 7 electrons in their outer shell.

4 0

4 years ago

Read 2 more answers

The atomic mass of N is 14.01 g/mol, and the atomic mass of H is 1.008 g/mol. What is the molecular mass of NH3?

MakcuM [25]

Answer:

Option A = 17.03 g/mol

Explanation:

Given data:

Atomic mass of nitrogen = 14.01 g/mol

Atomic mass of hydrogen = 1.008 g/mol

Molecular mass of NH₃ = ?

Solution:

Molecular mass of NH₃ = (14.01 g/mol × 1) + (1.008 g/mol × 3)

Molecular mass of NH₃ = 14.01 g/mol + 3.024 g/mol

Molecular mass of NH₃ = 17.03 g/mol

Ammonia consist of hydrogen and nitrogen both are nonmetals that's why ammonia is an covalent compound.

4 0

3 years ago

1st Define Covalent bond and it's type

irakobra [83]

Answer:

COVELENT BOND:-The chemical bond formed by the sharing of an electron pair between two atoms so that both the atoms get their octet complete is called covalent bond

SINGLE COVELENT BOND:-it is formed by sharing of one pair of electron between two atoms
DOUBLE COVELENT BOND:-it is formed by sharing of two pair of electron between two atoms
TRIPLE COVELENT BOND:- it us formed by sharing of three pair of electron beyween two atoms

2)Electron dot structures of carbon dioxide:-Oxygen atom contains 6 valence electrons which form 2 lone pairs. Since it is bonded to only one carbon atom, it must form a double bond. Carbon atom contains four valence electrons, resulting in zero lone pairs. Therefore, it is doubly bonded to each oxygen atom.

3))Sulfur has an atomic number is 16 with the

symbol as 'S'

The electronic configuration of sulfur is said to be 2,8,6
The valence electrons present in sulfur is 6.
Sulfur forms an octet structure by connecting 8 sulfur atoms with each other by the formation of single covalent bonds.
The sulfur molecule's chemical formula is S8.
Sulfur is usually used in the manufacture of sulphuric acid.

Explanation:

<h2>HOPE IT HELPS YOU #ITZADMIRER</h2>

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3 years ago

What volume(in mL) of a 0.500 M fructose(C6H12O6) solution can be made from 11.3 g of fructose?

AnnZ [28]

Okiiiiiiiiiiiiiii 0.126l

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3 years ago