Potassium is the 19th element so it is B
To solve this problem we will calculate the total volume of inhaled and exhaled water. From the ideal gas equation we will find the total number of moles of water.
An athlete at high performance inhales 4.0L of air at 1atm and 298K.
The inhaled and exhaled air contain 0.5% and 6.2% by volume of water, respectively.
During inhalation, volume of water taken is


During exhalation, volume of water expelled is


During 40 breathes, total volume of water taken is

During 40 breathes, total volume of water expelled out is

Therefore resultant volume of water expelled out from the lung is

From the body through the lung we have that

Here,
P = Pressure
R= Gas ideal constant
T= Temperature
V = Volume
Replacing,


Therefore the moles of water per minute are expelled from the body through the lungs is 0.373mol/min
Electrons and neutrons
altho if I were you id check other sites. Hopefully I was able to help.. Have a great day :)
Answer:
when you bring two objects of different temperatures together, energy will always be transferred from the hotter to the cooler object. The objects will exchange thermal energy, until thermal equilibrium is reached, until their temperatures are equal. We say that heat flows from the hotter to the cooler object.
Hello!
We can use the following equation for the potential difference between two parallel plates given an electric field and separation distance:

V = Potential Difference (? V)
E = Electric field strength (100.0 N/C)
d = distance between places (0.02 m)
Plug in the values and solve.
