Yes, because each hydrogen atom has less mass than each lead atom.
Yes, because each hydrogen atom has less mass than each lead atom.
Yes, because each hydrogen atom has less mass than each lead atom.
Yes, because each hydrogen atom has less mass than each lead atom.
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They both weight a kilogram. Lead has a higher density.
lead has much higher density
They both weigh one kg, so they should have the same weight.
The density of a material is defined as its mass per unit volume. A given volume of lead has more mass than a given volume of feathers. In common usage mass often refers to weight, but that is not a very exact usage of it. For this question it may be useful however to think of a given weight of lead per volume and a given weight of feathers.If you have a kg of lead, that is a small piece, a kg of feathers is a large amount.So for a given volume, say a cubic centimeter, the weight of lead is much more than the weight of feathers.
Please note that a kilogram is a unit of mass - NOT a unit of weight. And yes, a pencil has a mass that is considerably less than a kilogram. For comparison, a kilogram is the mass of a liter of water.