Answer:
will not occur.
Explanation:
A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution. Thus one element should be different from another element.
A general single displacement reaction can be represented as :

a) 
Flourine is more reactive than chlorine and hence this reaction cannot occur.
b) 
Sodium is more reactive than zinc and hence the reaction will occur.
c) 
Iron is more reactive than copper and hence the reaction will occur.
d) 
Magnesium is more reactive than hydrogen and hence the reaction will occur.
Answer:
<h2>23.33 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula

From the question we have

We have the final answer as
<h3>23.33 g/mL</h3>
Hope this helps you
Answer:
Because it helps the filament from decaying
Answer:
A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.