Answer: the correct answer is 7.8026035971 x 10^(-13) joule
Explanation:
Use Energy Conservation. By ``alpha decay converts'', we mean that the parent particle turns into an alpha particle and daughter particles. Adding the mass of the alpha and daughter radon, we get
m = 4.00260 u + 222.01757 u = 226.02017 u .
The parent had a mass of 226.02540 u, so clearly some mass has gone somewhere. The amount of the missing mass is
Delta m = 226.02540 u - 226.02017 u = 0.00523 u ,
which is equivalent to an energy change of
Delta E = (0.00523 u)*(931.5MeV/1u)
Delta E = 4.87 MeV
Converting 4.87 MeV to Joules
1 joule [J] = 6241506363094 mega-electrón voltio [MeV]
4 mega-electrón voltio = 6.40870932 x 10^(-13) joule
4.87 mega-electrón voltio = 7.8026035971 x 10^(-13) joule
Here's a picture of Kinematic formulas
The kinematic formulas are a set of formulas that relate the five kinematic variables listed below.
Δx - Displacement
t - Time interval
v0 - Initial velocity
v- Final velocity
a - Constant acceleration
It seems that you have missed the necessary options for this question, but anyway the correct answer for this would be FALSE. It is not true that when a bullet is fired, gunpowder only travels back towards the shooter. Though gunpowder residue can remain on the shooter's hand for a few hours. Hope this answer helps.
The charge? If you mean valance electrons, the answer is 8. All compounds must be equal to that of a noble gas.