why are significant figures important in completing mathematical practices in science? what other measurements can be converted using dimensional analysis ?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature