When you say alpha decay, it means that the reaction would yield alpha particles. An alpha particle, α, is like helium; it has 2 protons and 4 as its mass number. So, the balanced nuclear reaction is:
Let the first number written after the element symbol be the superscript and the number after the comma be the subscript.
<em>Am241,95 --> α4,2 + Np237,93</em>
A. would be H20 because O is 2- and H is 1+ so it needs to balance to 0.
sorry I don't know the others but I hope this helps with letter A
Answer:
Using the Guess Method
Explanation:
Finding the square root of a number is an automatic action in tools such as calculator and Excel without any rationale behind it. Hence, I find it more useful to describe as I learned at school: the guess and approach method (it can go by various other names).
The square root of a number is ‘a number which produces a specified quantity when multiplied by itself’.
The Guess Method is guessing that number by approximation until getting exactly the right one.
For example, we want to know the square root of, let’s say, 144. We know that 10*10 is 100. That’s close. Let’s add 1 to that. 11*11 is 121. Getting closer! 12*12 is… 144! Right on! Therefore, the square root of 144 is 12.
I used that technique every time I had to do the math by hand, no matter the number. I thought of a number that could be somewhat close enough (I would guess! Got the method name now? Lol) and adjust until I got my answer right.
Answer:
Explanation:
The compound 
is .
The reaction included are:
(because bromine is less reactive than chlorine)
But , because of hexane the solution get dilute and its color changes to orange.
Now, NaI is added and we know Br is more reactive than I.
Therefore it replace it.
Reaction: 
Purple color develop due to formation of Iodine.
