How many times lighter or heavier than a liter is a centiliter?
It is inappropriate to be talking about "lighter" or heavier"
with regard to liters and centiliters (or milliliters or
deciliters, etc.) Why? Because the liter (and its fractional parts)
is a unit of volume or capacity, not weight. You may say that a
liter is 100 times greater in volume than a centiliter. You could
say that a liter is ten times greater in volume than a deciliter.
You could also say that a deciliter is ten times greater in volume
than a centiliter. But one is not necessarily heavier or lighter
than another. Unless, of course, you have a liter and centiliter of
the same substance! A liter of water, for example, will be 100
times heavier than a centiliter of water -- as long as both are at
identical temperatures. (Water at 4 degrees Celsius is denser than
water at higher and lower temperatures, so a liter of water at 4
degrees C will weigh more than 100 times a centiliter of water at
higher or lower temps.)