subject
Chemistry, 05.04.2021 03:00 Kazya4

Radioactive Decay Data Disintegration
Half-life
Radioactive Isotope
140-14N
5.7x103
40K-40AR; 40K-40Ca
1.3x10
238U— 206Pb
4.5x10
87Rb-87Sr
4.9x1010

Please someone help I don’t understand it’s this science question please help


Radioactive Decay Data

Disintegration
Half-life
Radioactive Isotope
140-14N
5.7x103
40K-40AR; 40K

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 22.06.2019 14:00
What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?
Answers: 2
question
Chemistry, 22.06.2019 16:00
The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride
Answers: 1
question
Chemistry, 22.06.2019 21:00
As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.
Answers: 1
question
Chemistry, 22.06.2019 22:00
4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
Answers: 2
You know the right answer?
Radioactive Decay Data Disintegration
Half-life
Radioactive Isotope
140-14N
...
Questions
question
Mathematics, 02.09.2020 01:01
question
Mathematics, 02.09.2020 01:01
Questions on the website: 13722363