Your mass in space would be the same as your mass on Earth, but your weight in space would be zero.
You would weigh nothing. You still have mass, but mass is different than weight. Ever wonder why they say you are "weightless" in space? It's because of that: you would weigh nothing in space.
The moon has 1/6th the gravity of the Earth. If something weighed 60 pounds on Earth it would weigh ten pounds on the Moon. The mass of the object would not change, as mass is the measurement of how much stuff you are.
You would be lighter in space because weight is the result of gravity pulling on your mass. In the absence of gravity in space, you would not experience the same force pulling you down, making you feel weightless.
Your mass would remain the same in space, regardless of the location. Mass is a property that measures the amount of matter in an object, and it does not change depending on the gravitational field or location. However, your weight, which is the force of gravity acting on your mass, would be different in space because there is less gravity compared to Earth.
In space, nothing has any weight, regardless of its mass.
A speaker Water
The mass of a magazine can be weighed in grams.
Weight has no value in space. Weight is a function of gravity so in space Venus doesn't weigh anything. But it does have mass - See related question.
To determine the mass of the material being weighed on the balance, you would need to read the measurement displayed on the balance's scale. This measurement will indicate the mass of the material in grams or another unit of weight.
the moon
The mass of a person is MEASURED in kilograms. A mass cannot be weighed, and a person's weight is measured in Newtons.
To determine the mass of the material being weighed on the balance, you would need to read the measurement on the balance display. The mass of the material can be calculated based on the displayed value, taking into account any units and the precision of the balance.
A pound is a unit of mass. Mass is constant throughout the cosmos, so if the astronaut has a MASS of 180 pounds on Earth, it will be the same even in space. But, the astronaut doesn't have a weight of 180 pounds. His MASS is 180 pounds. Weight = mass x gravity. So, in space, his weight is 0 Newtons.
If the two bags weighed the same then yes they would have the same mass! But If they had different weights then the mass would be different! and the mass of the rocks would be higher then the bag of feather!
anything that has a weight and takes up space.
That would be "matter".
Fat has mass, so it adds weight to your body. (If you were weighed in zero gravity, it would weigh nothing, but it still has mass.)