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kirill [66]
4 years ago
11

Which subatomic particle identifies the atom

Chemistry
1 answer:
Sergio [31]4 years ago
3 0

Answer:

proton

Explanation:

The atoms is made from a nucleus and a electronic shell. The nucleus is composed from protons (positively charged) and neutrons (no charge). The electronic shell is defined by the presence of electrons (negativity charged).

Now a particular element is identified by the number of protons which have to be equal to the number of electrons in the electronic shell. A particular element may have the same number of protons but different number of neutrons, these are isotopes which have the same chemical properties.

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Lori is saving money to buy a new bike. She needs $120 but has only saved 60%.
I am Lyosha [343]
10% of 120 is 12
12 x 6 is 72
The answer is 72
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3 years ago
Your skin is an important organ and has several functions. All of the functions below are performed by the skin EXCEPT
Svet_ta [14]

Answer:

D. works with bones to help you move

Explanation:

Your muscles and tendons are what help bones move.

8 0
3 years ago
What is the maximum number of electrons that can be contained in the first, second, third, and fourth energy levels, respectivel
Marysya12 [62]

Answer:First energy level = 2electrons

Second energy level = 8 electrons

Third energy level = 18 electrons

Fourth energy level = 32 electrons

Explanation: Each energy level can contain up to 2n^2 electrons. Where n indicates number of level

For first energy level where n=1

Number of electrons = 2(1)^2 = 2

For second energy level where n =2 Number of electrons = 2(2)^2 =8

For Third energy level where n=3

Number of electrons=

2(3)^2 = 18

For fourth energy level where n=4

Number of electrons =

2(4)^2 = 32

5 0
4 years ago
How does the bond energy of HCl(g) differ from the standard enthalpy of formation of HCl(g)?
sergeinik [125]

Answer:

it's the same if rounded off to the nearest decimal or slightly different if not.

Explanation:

The enthalpy of formation is -431.6 kJ, while the bond energy of H-Cl is -432 kJ.

5 0
2 years ago
Iodine, I2, is a solid at room temperature but sublimes (converts from a solid into a gas) when warmed. What is the temperature
Finger [1]

Answer:

T = 3.75 K

Explanation:

As we know

PV = nRT

R =8.3144598 J. mol-1. K-1

P = 0.562 atm

V = 83.3 mL

moles in 0.392 g of I2 = 0.392/mass of I2 = 0.392 grams/253.8089 g/mol = 0.0015 moles

Substituting the given values, we get

0.562 atm * 83.3 *10^-3 L = 0.0015 moles * 8.3144598 J. mol-1. K-1 * T

T = 3.75 K

3 0
3 years ago
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