A student reacts Mg and HCl together. The product of this reaction is H2 gas and MgCl2. The balanced equation for this reaction is Mg + 2HCl → H2 + MgCl2
If I need to create 50 L of H2 how many moles of HCl should I start with?
a) 2.3 mol HCl
b) 4.5 mol HCl
c) 1.1 mol HCl
d) 44.6 mol HCl

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

increased stability in the completion of fluorine's outer shell.

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds

they are all solids.