Given the reaction in the photo you posted, the particle that is represented by the X will be {30 / 15 P }. The correct answer will be choice number 4 which is located on the graph.
It will have 98 number of electrons because the number of protons are equals to the number of electrons unless element x has isomers. if it has isomers then only it will have a different electron number but mind it the proton number will remain the same. note: if the proton number changes the whole element changes.
Answer:
Explanation:
2AgNO₃ + Sn ⇄ Sn( NO₃)₂ + 2Ag
Ag⁺/Ag = .80 V
Sn⁺²/Sn = - .14 V
Hence Ag will be reduced and Sn will be oxidised . Hence the reaction will take place . YES .
2 ) 2 electrons are transferred .
3 )
2Ag⁺ + 2e = 2Ag
Sn = Sn⁺² + 2e
---------------------------
2Ag⁺ + Sn = Sn⁺² + 2Ag .
Answer:
it's A but I don't know the other one
Three half lives meant that the mass was halved three times. Therefore, 20 * 2 * 2 * 2 to reverse the process yields 160 grams in the beginning.