All categories

2 years ago

Which subatomic particles exist in orbital energy levels, or shells?

Chemistry

2 answers:

Ann [662]2 years ago

7 0

Answer: Electrons

Explanation: As given by Schrodinger that the probability of finding an electron in the given space is known as Orbital.

Thus the subatomic particles that exist in orbital energy levels or shells are electrons.

Electron has an charge of a negative unit. It was discovered by the scientist J.J.Thomson.

Atom consist of protons and neutrons that are present in the nucleus . Electrons revolve around the nucleus.

Naily [24]2 years ago

6 0

The correct answer among the choices given is the first option. Electron is the subatomic particle that exist in a orbital energy levels or shells. At the first energy level, the only orbital available for the electrons is the 1s while in other orbitals there are more than one type of orbital.

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How could you tell whether a liquid is honey or vinegar?

MissTica

Based on the liquids viscosity (which is a measure of how quickly/slowly a fluid can flow).

Higher viscosity represents a "thicker" liquid & slower flow (honey)
Lower viscosity represents a "thinner" liquid & quicker flow (vinegar)

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3 years ago

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Consider this reaction: KOH + HBr - KBr + H20 Which statement is most likely true about HBr?

Roman55 [17]

Answer: It turns blue litmus red

Explanation:

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2 years ago

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What is the atomic number of an atom that has 20 protons and 20 neutrons

vladimir2022 [97]

Answer:

Explanation:

Hi there!

We need to find the atomic number of an atom that has 20 protons and 20 neutrons

the atomic number of an atom is equivalent to the amount of protons an atom has, as the number of protons determines what element an atom is.

Since the atom has 20 protons, the atomic number of the said atom is 20

Hope this helps!

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3 years ago

Entropy can be thought of as the degree of disorganization of a system. TRUE FALSE

Mice21 [21]

Answer:

True

Explanation:

The entropy of a system denoted by S is a thermodynamic function that increases in value when there are more ways to arrange the particles in the system. Some spontaneous chemical processes are entropy driven. An increase in entropy is said to drive the dissolution of ionic salts along with the evaporation of water are related to the spreading out of energy.

The entropy of a system can be taken as a measure of disorder of a system. In a spontaneous chemical process, the entropy of the universe is said to increase. ΔSunivu>0. Making the answer true.

7 0

2 years ago

A serving of soup contains 5.0 g of fat, 20.0 g of carbohydrates, and 3.0 g of protein. Determine how many kilocalories (kcal) a

marta [7]

Answer: The amount of kilocalories contained in the given serving of soup is 0.137 kCal

Explanation:

As per the USDA:

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.

We are given

Mass of fat in the soup serving = 5.0 g

Mass of carbohydrates in the soup serving = 20.0 g

Mass of protein in the soup serving = 3.0 g

Conversion factor used: 1 kCal = 1000 Cal

Applying unitary method:

For Fat:

1 gram of fat provides 9 calories

So, 5.0 gram of fat will provide = $\frac{9}{1}\times 5.0=45Cal=0.045kCal$

For Carbohydrates:

1 gram of carbohydrates provides 4 calories

So, 20.0 gram of carbohydrates will provide = $\frac{4}{1}\times 20.0=80Cal=0.080kCal$

For Proteins:

1 gram of proteins provides 4 calories

So, 3.0 gram of fat will provide = $\frac{4}{1}\times 3=12Cal=0.012kCal$

Total kilocalories per serving = [0.045 + 0.080 + 0.012] kCal = 0.137 kCal

Hence, the amount of kilocalories contained in the given serving of soup is 0.137 kCal

4 0

3 years ago