The statement that the friend made is not true. most of the mass of the plant is from carbon. the carbon comes from carbon dioxide which is used during photosynthesis. the left over carbon from photosynthesis is used to to help the plant gain mass. there is a process for this which is called cellular respiration
Partial pressure of gas A is 1.31 atm and that of gas B is 0.44 atm.
The partial pressure of a gas in a mixture can be calculated as
Pi = Xi x P
Where Pi is the partial pressure; Xi is mole fraction and P is the total pressure of the mixture.
Therefore we have Pa = Xa x P and Pb = Xb x P
Let us find Xa and Xb
Χa = mol a/ total moles = 2.50/(2.50+0.85) = 2.50/3.35 = 0.746
Xb = mol b/total moles = 0.85/(2.50+0.85) = 0.85/3.35 = 0.254
Total pressure P is given as 1.75 atm
Pa = Xa x P = 0.746 x 1.75 = 1.31atm
Partial pressure of gas A is 1.31 atm
Pb = Xb x P = 0.254 x 1.75 = 0.44atm
Partial pressure of gas B is 0.44 atm.
Learn more about Partial pressure here:
brainly.com/question/15302032
#SPJ4
Is this a question? if so please elaborate.
I think the answer is C. 02
The mass can be obtained from the molar mass when the number of moles is known.
<h3>What is molecular formular?</h3>
The molecular formlar is the formula of the compound that shows the number of atoms of each element that is present in the molecule. Asprin is a moecule that has the molecular formula C9H8O4.
To use the molecular formula to determine weight, we have to know the number of moles involved.
Mass = number of moles * molar mass.
Learn more about molar mass: brainly.com/question/12127540
