Nucleus:direct all the organelles
Answer : The enthalpy change for the reaction,
Solution : Given,
(1)
(2)
(3)
Now we have to calculate the enthalpy change for this reaction by doing:
Therefore, the enthalpy change for the reaction,
Answer:
1034 yrs
Explanation:
The equation to use in this question is:
t = -2.303/k log (A/A₀) where
A= present number of disintegrations
A₀ = intial number of disintegrations
k = decay constant
The decay constant we will obtain it from the given hal-life:
k: 0.693/t₁/₂, t₁/₂ = half-life ⇒
k: 0.693 / 5730 y = 1.209 x 10⁻⁴ /y⁻¹
t = - 2.303 / 1.209 x 10⁻⁴ /y⁻¹ x log (13.1/15.3) = 1034 yrs
The electron bit would be 2 and you could colour in 4 boxes:) I had the same question as this and I got it correct
It has 7 neutrons. The atomic mass is the sum of protons and neurons, therefore you subtract the number of protons from the atomic mass to get the number of neutrons.