Most scientists believe that perpetual motion devices can never be invented, but people come up with new ideas for them all the time. Do you think people should keep trying? Why?

At stp, what is the volume of 1 mole of co2?

What is the mass of 8 moles of sodium atoms

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