A kilogram of anything weighs a kilogram
They all would weigh the same amount, 1 Kilogram.
A kilogram is a measure of mass therefore a kilogram of lead and a kilogram of feathers have the same mass: one kilogram. They would, however, have different volumes and densities.
They are equal.
Lead has a much higher density than feathers; 1 kg. of it fits into a smaller volume.
Because of its' mass density. The lead would be much smaller in size.
They both weigh the same !
Density, the atoms in a a kg of lead will be a closely packed solid, a kg of feathers will be a lot more spread out and surrounded by air.. That is assuming both your lead and feathers are under standard conditions..
They simply have the same weight.
both have the same mass
It's the same amount.