This is true because he don t needs more electrons and the last shell is ful
It protects the cell and allows certain material in and out of the cell
Each mole of C₂H₄ requires 3 moles of O₂ to react.
5.75 moles of C₂H₄ will require:
3 x 5.75 = 17.25 moles
Each mole of gas occupies 22.4 L at STP.
Liters of gas = 17.25 x 22.4
= 3.86 x 10² L
The answer is C.
The mass of chlorine gas is calculated as follows
find the moles HCl , At STP 1moles = 22.4 liters
what about 174 L
moles = 174l x 1mole/22.4L= 7.77 moles
write the equation for reaction
H2 + Cl2 =2HCl
by
use of mole ratio between cl2 to HCl (1:2) the moles of Cl2 =7.77/2 = 3.885 moles
mass is therefore = 3.885 mol x 71 gmol = 275.84 grams
Formula for molarity is
Molarity=moles of solvent/solution in liters
In given data
NaOH is 21.2g which is needed to be convert in moles first
As no.of moles=mass in gram/molar mass
Molar mass of NaOH is 39.997g/mol
Putting in formula for mole.we get
No of mole = 21.2g/39.997gper mole
= 0.530mole
Now put these values in molarity equation, we get
Molarity =moles of NaOH/ solution in liter
= 0.530/7.92
=0.067M NaOH
