Answer:
Explanation:
The formula for the force exerted between two ions is
where the Coulomb constant
k = 8.988 × 10⁹ N·m·C⁻²
Data:
z₁ = +2; r₁ = 0.62 nm
z₂ = -1; r₂ = 0.121 nm
Calculations:
r = r₁ + r₂ = 0.62 + 0.121 = 0.741 nm
Mathematical formula of Ideal Gas Law is PV=nRT
where: P-pressure,
V-volume
n-number of moles; m/MW
T-Temperature
m-mass
d-density ; m/V
MW-Molecular Weight
R- Ideal Gas constant. If the units of P,V,n & T are atm, L, mol & K respectively, the value of R is 0.0821 L x atm / K x mol
Substituting the definitions to the original Gas equation becomes:
d= P x MW / (RxT)
Solution : d= .90atm x 28 g/mol (CO) / 0.0821Lxatm / mol x K x 323 K
d = 25.2 g / 26000 mL
d = .0.00096 g/mL is the density of CO under the new conditions
60 i believe i haven't did science in a while sorry if im wrong though... ._.
Answer: To be able to not forget what have they done when they want to re-do it.
to make it easier for the next person to re-do the experiment.
Explanation:
the description of the procedure ensures that when the experiment becomes of a success,specific steps are recorded for improvement of the experiment if maybe the experiment can be done at a short space of time.
