Answer:
3626.76dm³
Explanation:
Given parameters: 
Number of moles of Nitrogen in tank = 17moles
Temperature of the gas = 34°C
Pressure on the gas = 12000Pa
Unkown: 
Volume of the tank, V =?
Converting the parameters to workable units: 
We take the temperature from °C to Kelvin
K = 273 +  °C  = 273 + 34 = 307k
Taking the pressure in Pa to atm: 
101325Pa = 1atm
12000Pa = 0.118atm
Solution: 
To solve this problem, we employ the use of the ideal gas equation. The ideal gas law combines three gas laws which are the Boyle's law, Charles's law and the Avogadro's law. 
             It is expressed as PV = nRT
The unknown is the Volume and we make it the subject of the formula
              V = 
Where R is called the gas constant and it is given as 0.082atmdm³mol⁻¹K⁻¹
Therefore  V =  = 3626.76dm³
 = 3626.76dm³
 
        
                    
             
        
        
        
Answer: 
The nucleus, that dense central core of the atom, contains both protons and neutrons.
So to answer your question yes it does contain all of the protons in the atom. 
* Hopefully this helps:) Mark me the brainliest:)!
 
        
             
        
        
        
Answer:
b
Explanation:
 electrons lie in the orbits of the atom. they are negatively charged and they are very small in size. they have very less mass than proton. ele tron has 1/1840 mass of proton. 
 
        
             
        
        
        
-well, we all need water as living organisms in order to live. water helps us clean our body (just like you clean yourself in a shower to clean your skin),but drinking water helps you to take a shower inside your body! (sounds weird but true XD) you get the point... here are a few things water does to our body:
- water helps helps our skin to look beautiful (you can say youthful skin) and even beauty itself.
- it trashes body waste and toxins (like i said above)
- it gives us nutrients and minerals 
- it helps us to maintain out blood pressure
- it also helps to regulate our body temperature
- it transfers oxygen through the whole body
- it helps with digestion
-  weigh loss 
- gives you energy ( thats why when your exercising you need to drink water every 15 min XD)
-prevents from you have a stinky breath *-*
- it helps with back-pain, headaches, heart health...etc
- it helps boost your immune system 
- increases your brain power 
so those are what i got for you about why water is important to us  :D