Answer: Mercury-194 is an unstable isotope and hence is radioactive.
Explanation: Mercury-194 is an isotope of mercury, having formula 
Number of protons in this isotope = 80
Number of neutrons in this isotope = 114
This isotope is radioactive in nature and under decay process by Electron Capture.
Electron capture reactions are the reactions in which a proton in a nucleus absorbs an electron and convert it into neutron. The resulting nucleus will have a decreased atomic number and same atomic mass.
Reaction for electron capture of mercury-194 follows:

Answer:
I believe the molecular formula is MnBr2·4H2O or Br2H8MnO4
Explanation:
Answer:
MgS is the formula and Magnesium sulfide is compound name
Explanation:
Answer:
The picture is too small
Explanation:
I will fix my answer if you show the complete answer
The answer is a. concentrated. (If the statement was instead that large amounts of water was involved and smaller amounts of salt, the answer would be instead c. dilute)