Answer:
Its D :)
<em>Or not i haven't done this in a while-</em>
Hey there!:
β-decay:
Unstable nucleus undergo β-decay in which a neutron is converted into proton , so
¹₀ n ----> ₁¹p + ₋₁⁰e ( Z + 1 )
The complete reaction is as follows:
²²⁷₈₉AC -----> ²²⁷₉₀ Th + ₋₁⁰e
Therefore , the daughter nucleus is : ²²⁷₉₀ Th
Hope that helps!
An oxygen atom is 16x more massive than a hydrogen atom.
You can figure this out by comparing the atomic masses of the two elements: oxygen has an atomic mass number of 16, and hydrogen has an atomic mass number of 1. Thus, an oxygen atom is 16 times more massive than a hydrogen atom.
Answer :
- <u>Part A :</u> The given unbalanced redox reaction is,
Now we have to balance the given redox reaction in acidic medium by half reaction method.
1st half reaction :
2nd half reaction :
For net balanced reaction, 1st half reaction is multiplying by 8 and 2nd half reaction is multiplying by 5
The net balanced redox reaction is,
- <u>Part B :</u> The given unbalanced redox reaction is,
Now we have to balance the given redox reaction in basic medium by half reaction method.
1st half reaction :
2nd half reaction :
For net balanced reaction, 1st half reaction is multiplying by 2.
The net balanced redox reaction is,
She would observe a yellowish solid precipitate which is the lead iodide and a white solid precipitate which is the potassium nitrate.
This is because the lead nitrate solution which contains particles of lead will mix with the potassium iodide solution containing particles of iodide. Upon mixing,the lead particles from the Lead nitrate solution combines with the iodide particles from Potassium iodide and form two compounds, a yellowish solid precipitate called lead iodide and a white solid precipitate called Potassium nitrate.
The formation of entirely two new compounds is known as the double displacement reaction and can be written in a chemical equation as
2KI(aq.)+Pb(NO₃)₂(aq.)------>2KNO₃(aq.)+PbI ₂(s)
See similar answer here :https://brainly.in/question/46262462