1 liter is 1000 grams so 74.4*1000=74400 grams
C. Electrical conductivity, that means it can pass electricity through wires if needed, think of your phone charger as an example
I searched it up on Google and I got 473.176 Hope this helps.
The potential energy ..
1- when a rubber band is stretche and waiting to be released
2- an acorn hanging from a oak tree
3- a pice of celery
D. powder residues.
the police and forensic chemists usually perform a qualitative test called GPR or gun powder residue. the residue sticks to the skin.