If Cadmium has an atomic number of 48 and an atomic mass of 112 and it undergoes alpha decay, what is the new element produced? a. Palladium, atomic number: 46, atomic mass: 108

b. Ruthenium, atomic number: 44, atomic mass: 110

c. Tin, atomic number: 50, atomic mass: 118

d. Cadmium, atomic number: 48, atomic mass: 108

answer; natural resources;

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.