A. they have the same acceleration
I hope this helps!
The instrument used to measure atmospheric pressure is called a Barometer.
P is pressure which can also he known as pascal or momentum
Answer:
a) There are
electrons in a liter of water.
b) The net charge is -53601707,1 C
Explanation:
a) To find out how many electrons are in a liter of water (equivalent to 1000 grams of water), we have to find out how many molecules of water there are and then multiply it by 10 (e- per molecule).
We can find out how many molecules are by finding the number of moles and then multiplying it by Avogadro's number (number of elements per mol):
![e^{-}= \frac{m_{water} }{M_{water} } * Avogadro* \frac{e^{-} }{molecule}= \frac{1000g }{18g/mol} * 6,022*10^{23} * \frac{10e^{-} }{molecule}=3,35*10^{26} e^{-}](https://tex.z-dn.net/?f=e%5E%7B-%7D%3D%20%5Cfrac%7Bm_%7Bwater%7D%20%7D%7BM_%7Bwater%7D%20%7D%20%2A%20Avogadro%2A%20%5Cfrac%7Be%5E%7B-%7D%20%7D%7Bmolecule%7D%3D%20%20%5Cfrac%7B1000g%20%7D%7B18g%2Fmol%7D%20%2A%206%2C022%2A10%5E%7B23%7D%20%2A%20%5Cfrac%7B10e%5E%7B-%7D%20%7D%7Bmolecule%7D%3D3%2C35%2A10%5E%7B26%7D%20e%5E%7B-%7D)
b) As all electrons have the same charge, in order to find the net charge of those electrons we have to multiply the charge of a single electron by the number of electrons:
![Net charge= -1,602*10^{-19} \frac{C}{e^{-} } *3,35*10^{26} e^{-}=-53601707,1 C](https://tex.z-dn.net/?f=Net%20charge%3D%20-1%2C602%2A10%5E%7B-19%7D%20%20%5Cfrac%7BC%7D%7Be%5E%7B-%7D%20%7D%20%20%2A3%2C35%2A10%5E%7B26%7D%20e%5E%7B-%7D%3D-53601707%2C1%20C)
An important clarification is that while the net charge may seem huge, water as a whole is a neutral medium, because there are as many protons as there are electrons, and as they have the same charge, the net charge of water is 0.