Questions Identify the missing element in the following fission reaction.*
1 point
235 U +on
236
141
56
92U*
92
Ba +
+ 3)n + Q
-
Zr
U
Kr
Sr
Pu

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.