Answer:

Explanation:
lets take the particle is X, the given decay reaction can be written as follows

Now by using mass balancing:
The sum of the mass of right hand side=The sum of the mass of left hand side
49=49+M
M=0
Now by using atomic number balancing:
Atomic number on right side=Atomic number on left side
25 = 24 + Z
Z=1
Therefore we can say that , the mass of that unknown particle is 0 unit and atomic number is 1.
Thus that particle will be positron.

Answer:
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Explanation:
Explanation:
Given parameters:
Dimension = 8.5in²
we are to convert from in² to cm²
in² = in x in
cm² = cm x cm
1 in = 2.54cm
Using dimensional analysis;
8.5in² x 
= 54.84cm²
We solved this problem using dimensional analysis where we multiplied the unit with 1.
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C. 343K
70 degrees C + 273 = 343