Its weight depends on the force of gravity acting on the mass. In outer space, for example, its weight will be 0.
Your mass is always the same.
weight = mass x gravity weight = 75kg x 1.6 weight = 120N
If the object's mass is 12 kg, then it's 12 kg. On Earth, on the moon, on Mars, or floating weightless in a space ship coasting from one of them to another. Weight depends on where you are, but mass doesn't.
48 newtons (10.8 pounds) (rounded)
Weight = m gm = weight/g = 39.2/9.8 = 4 kg