It depends on the size.
It depends (on the density what you are measuring). Block of Styrofoam would weigh less than a block of lead.
A cubic foot of cast lead weights 708 pounds.
They both weigh the same.
Because pounds measure weight. A pound of feathers would be a whole lot bigger than a pound of lead.
If he weighs 80 pounds on the earth, then he would weigh about 13.1 pounds on the moon.That's not counting his space-suit, helmet, oxygen tank, radio, heater, lead boots, etc.
lead density is 0.41 pounds/cubic inch 1.68 x 0.41 = 0.688 pounds
64,000 pounds = 32 tons, and it doesn't matter if it's 64,000 pounds of water, lead or feathers.
By definition, they have exactly the same mass.
Weight is a measurement of how hard gravity is pulling on a set amount of mass. The stronger the gravity on a heavenly body (planet, moon, star, asteroid, etc) the stronger the pull on mass. A block of lead that weighs 100 pounds here on Earth would weigh 16 pound on the moon (since the gravity of the moon is much less than that of Earth). The same block would weigh 236 pounds on Jupiter since it's gravity is much stronger than the Earth's. Mass never changes but the effect of gravity on that mass (weight) changes depending on what is pulling on it.
It depends on the shape of the lead. If you pound it into a thin sheet and make it into a big sphere so that it displaces more than 100 lbs. of saltwater, then it will weigh nothing and actually float. If you compress it into the smallest solid lump possible, then it will weigh 100 pounds minus the weight of the volume of water displaced.
More info needed. How much does 0.4 cubic feet of what weigh? Air? Lead? Water? Dirt?
Lead has a higher atomic number than iridium, which means a lead atom is heavier than an iridium atom. however iridium is denser, therefore if you had a block of iridium and a block of lead,the iridium block would be heavier