4.88x10^20 H2O2 molecules
I Think that the answer is 15.2096 Kilograms, but I might be wrong.
Answer:
The number of moles =
The number of molecules =
Explanation:
Volume of the sphere is given by :
here, r = radius of the sphere
Radius = 3 mm
r = 3 mm
1 mm = 0.01 dm (1 millimeter = 0.001 decimeter)
3 mm = 3 x 0.01 dm = 0.03 dm
r = 0.03 dm
<em>("volume must be in dm^3 , this is the reason radius is changed into dm"</em>
<em>"this is done because 1 dm^3 = 1 liter and concentration is always measured in liters")</em>
(1 L = 1 dm3)
Now, concentration "C"=
The concentration is given by the formula :
This is also written as,
moles
One mole of the substance contain "Na"(= Avogadro number of molecules)
So, "n" mole of substance contain =( n x Na )
Molecules =
molecules
The answer is D. hope I was right
Answer : The total pressure at equilibrium is 0.350 atm
Solution : Given,
Initial pressure of = 0.350 bar
= 0.016
The given equilibrium reaction is,
Initially 0.350 0 0
At equilibrium (0.350-2x) x x
The total pressure at equilibrium =
Thus, the total pressure at equilibrium is 0.350 atm