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Bad White [126]
3 years ago
8

2. Which two particles are found in an atom's nucleus?

Chemistry
1 answer:
lawyer [7]3 years ago
3 0

Answer:The nucleus contains two types of subatomic particles,  

       protons and neutrons.

Explanation:The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus.

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Predict the sign of ΔSsys for each of the following processes. Which are positive? (a) Gasoline vapors mix with air in a car eng
OLEGan [10]

Answer:

Positive: a and b

Negative: c

Explanation:

The entropy (S) is the measure of the randomness of the system, and it intends to increase. The randomness can be determined by the energy of the molecules, their velocity and how distance they are between the other molecules.

When the entropy increases, ΔS is positive, when the entropy decreases, ΔS is negative. So, when gasoline mix with air in a car engine, the process intends to continue, the randomness increases and ΔS is positive. When hot air expands, the distance between the molecules increases, so ΔS is positive.

But, when humidity condenses, the molecules stay closer, so there's a decrease in the randomness, then ΔS is negative.

6 0
3 years ago
The potential in an electrochemical cell, E, is related to the Gibb's free energy change (ΔG) for the overall cell redox reactio
Nana76 [90]

Answer:

Explanation:

As an example, the following cell reaction: Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(m) generates a cell voltage of +1.10 V under standard conditions. Calculate and enter delta G degree (with 3 sig figs) for this reaction in kJ/mol.

Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(m)

ΔG = ΔG° + RTInQ

Q = 1

ΔG = ΔG°

ΔG = =nFE°

n=no of electrons transfered.

E° = 1.1v

ΔG° = -2 * 96500 * 1.10

= -212300J

ΔG° =-212.3kJ/mol

<h3>Therefore, the ΔG° = -212.3kJ/mol</h3>
5 0
3 years ago
The nuclear binding energy of one nitrogen-14 atom is (BLANK) x 10A J. Round to 3
d1i1m1o1n [39]

mass defect = mass of constituents - mass of atom

N has 7p and 9n

proton mass ~ 1.00728 amu

neutron mass ~ 1.00866 amu

electron mass ~ 0.000549 amu

Nitrogen mass ~ 14.003074 amu

mass defect = (7*1.00728)-(7*1.00866)-(7*0.000549) - 14.003074

= 0.11235amu

convert to energy, the binding energy = 1.68x10^-11 J


5 0
3 years ago
Convert 73.7L to KL *
Mariulka [41]
0.737 KL would be the answer, pls give brainliest.
7 0
3 years ago
Use the References to access important values if needed for this question. The Pauli Exclusion Principle tells us that no two el
vaieri [72.5K]

The quantum numbers are used to describe the position of an electron in atom.

<h3>What are quantum numbers?</h3>

The quantum numbers are used to describe the position of an electron in atom. I have attached a picture that shows the complete question.

For the 1s orbital;

n =1

l = 0

ml = 0

ms = ±1/2

For the 2s orbital;

n = 2

l = 1

ml = -1, 0, 1

ms = ±1/2

Learn more about quantum numbers:brainly.com/question/18835321

#SPJ11

3 0
2 years ago
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