Asubstance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change, change that into an idiom

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

What term describes technology that operates on an atomic level