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GenaCL600 [577]
3 years ago
7

If two protons and two neutrons are added to the nucleus of a carbon atom, what nucleus does it become?

Physics
2 answers:
jonny [76]3 years ago
8 0
Carbon(6 protons) + 2 protons = 8 protons

<u>Oxygen</u> = element with 8 protons
Nostrana [21]3 years ago
7 0

Explanation:

Atomic mass is the total number of all the protons and neutrons present in an atom.

For example, a carbon atom has atomic number 6 and it has 6 neutrons.

Atomic number also means the total number of protons present in an atom.

Hence, atomic mass of this carbon atom will be (6 protons + 6 neutrons) = 12.

If two protons and two neutrons are added to the nucleus of a carbon atom then atomic mass of this carbon atom will be as follows.

               Atomic mass = [(6 + 2) protons + (2 + 6) neutrons]

                                      = 16

As it is known that oxygen is the element that has atomic mass 16 and atomic number 8.

Therefore, we can conclude that the nucleus of given carbon atoms has converted into the nucleus of oxygen atom.

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A sample of a gas in a rigid container has an initial pressure of 5 atm at a temperature of 254.5 k. The temperature is decrease
skelet666 [1.2K]

The gas is in a rigid container: this means that its volume remains constant. Therefore, we can use Gay-Lussac law, which states that for a gas at constant volume, the pressure is directly proportional to the temperature. The law can be written as follows:

\frac{P_1}{T_1} = \frac{P_2}{T_2}

Where P1=5 atm is the initial pressure, T1=254.5 K is the initial temperature, P2 is the new pressure and T2=101.8 K is the new temperature. Re-arranging the equation and using the data of the problem, we can find P2:

P_2 = T_2 \frac{P_1}{T_1}=(101.8 K) \frac{5 atm}{254.5 K}=2 atm

So, the new pressure is 2 atm.

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3 years ago
How much energy is needed to raise a 50kg block up from the ground to a height of 5 meters?​
miss Akunina [59]

Answer:

The answer to your question is    Pe = 2452.5 J

Explanation:

Data

mass = 50 kg

height = 5 m

gravity = 9.81 m/s²

Process

The energy of this process is Potential energy which is proportional to the mass of the body, the gravity and the height of the body.

           Pe = mgh

Substitution

           Pe = (50)(5)(9.81)

Simplification

           Pe = 2452.5 J

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