Answer : The balanced chemical reaction will be:
Explanation :
Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.
As per given statement, the sodium reacts with sulfur to form sodium sulfide as a product.
The balanced chemical reaction will be:
By the stoichiometry we can say that, 16 moles of Na react with 1 mole of 
to give 8 moles of 
.
Answer is : It is a good thermal and electrical conductor. -The main point to be noted is that aluminium is a highly reactive element and still it is used for making cooking utensils. The reason is that aluminium has a very high affinity for oxygen. So, it reacts with oxygen and forms a layer of aluminium oxide on its surface.
Answer:
B. Cu (s) +Ni(NO3)2 (aq) - 2CuNO3 +Ni (s)
Explanation:
the above reaction is a substitution reaction
