Radioactivity refers to the natural transmutation, whereas transmutation refers to the change of one chemical element into another
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Answer:Rubidium and Strontium
Explanation:
Answer: 7.07 grams
Explanation:
To calculate the moles :
![\text{Moles of} zinc=\frac{21g}{65g/mol}=0.32moles](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%7D%20zinc%3D%5Cfrac%7B21g%7D%7B65g%2Fmol%7D%3D0.32moles)
![\text{Moles of} CuCl_2=\frac{7g}{134g/mol}=0.052moles](https://tex.z-dn.net/?f=%5Ctext%7BMoles%20of%7D%20CuCl_2%3D%5Cfrac%7B7g%7D%7B134g%2Fmol%7D%3D0.052moles)
According to stoichiometry :
1 mole of
require 1 mole of ![Zn](https://tex.z-dn.net/?f=Zn)
Thus 0.052 moles of
will require=
of ![Zn](https://tex.z-dn.net/?f=Zn)
Thus
is the limiting reagent as it limits the formation of product and
is the excess reagent.
As 1 mole of
give = 1 mole of ![ZnCl_2](https://tex.z-dn.net/?f=ZnCl_2)
Thus 0.052 moles of
give =
of ![ZnCl_2](https://tex.z-dn.net/?f=ZnCl_2)
Mass of ![ZnCl_2=moles\times {\text {Molar mass}}=0.052moles\times 136g/mol=7.07g](https://tex.z-dn.net/?f=ZnCl_2%3Dmoles%5Ctimes%20%7B%5Ctext%20%7BMolar%20mass%7D%7D%3D0.052moles%5Ctimes%20136g%2Fmol%3D7.07g)
Thus 7.07 g of
will be produced from the given masses of both reactants.