Answer:
C. anything that has mass and takes up space
Solution :
Molecular mass of NaOH is 23 g/mol .
So, number of moles of NaOH is given by :

Now, we know molarity is given by :


Hence, this is the required solution.
The formula of work is Work (Joules)=Force (Newtons) · distance in the direction of the force (meters), therefore its just a matter of replacing factors.
Work done = 12 · 4.5= 54 joules
No, some impurities may alter the observed effects of a chemical reaction.. during a reaction other products may be produced, they may alter the MP or BP of the pure substance.