How is the partial pressure exerted by n2 gas affected when some o2 is introduced into a container if the temperature and volume remain constant?

Addition of O₂ gas does not affect the partial pressure of the N₂ gas, at constant temperature and pressure

Explanation:

Partial pressure (p) of a given gas in a mixture is the pressure exerted by that gas when it occupies the entire volume of container alone.

Whereas, total pressure (P) of the gaseous mixture is given by the Dalton's law and is equal to the sum of partial pressure of individual gas in the mixture, at constant volume and temperature.

Therefore, for a mixture containing N₂ and O₂ gas,

the total pressure (P) = p₁ + p₂

Here, p₁ = partial pressure of N₂

and p₂  = partial pressure of O₂

From this equation it is evident that the partial pressure of each gas is independent of the partial pressure of other gas, at constant volume (V) and temperature (T) and is given by the ideal gas equation:

Partial pressure of N₂ : p₁ = n₁ RT ÷ V

Partial pressure of O₂ : p₂ = n₂ RT ÷ V

Thus, the partial pressure of the N₂ gas (p₁) is dependent on the number of moles of N₂ gas (n₁) only, at constant temperature and pressure.

⇒ p₁ ∝ n₁

Also, the partial pressure of the O₂ gas (p₂) is dependent on the number of moles of O₂ gas (n₂) only, at constant temperature and pressure.

⇒ p₂ ∝ n₂

Therefore, adding O₂ gas does not affect the partial pressure of the N₂ gas, at constant temperature and pressure.    

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.