Which is one use of lasers? reproducing images to make them clearer
producing a magnified image of the moon
cutting an iron bar into two pieces
making a leaf appear larger so its veins are visible

cutting iron bars

Explanation:

rip 999

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

i'm pretty sure it is letter c.) car