Gravity works on Helium the same as it works on everything else. But the higher air pressure at sea level (caused by gravity compressing air particles at the surface) works against Helium to squeeze it upwards. This effect is called buoyancy, where a fluid of lesser density (Helium) is pushed away by a fluid of higher density (normal air). It's the same effect you see when a ball full of air is pushed into water.
Helium defies gravity because it is lighter than the air around it. This causes it to rise upwards, creating a buoyant force that opposes gravity. This is why helium balloons float in the air.
Yes, Gas does have a gravity. Gravity affects anything and everything that has a mass. But as the gravitational force is directly proportional to the mass, and since gases have a very very low mass, The force exists but is very low. If gases were not affected by gravity, the atmosphere would not exist!
helium doesn't have a specific gravity
No, only weight is affected by gravity: attraction, force, acceleration.
No. Weight is affected by gravity.
The measurement of weight is affected by gravity.
Hydrogen, helium and oxygen are gases. Gravity is a physical property of any substance.
I am not sure what you mean by 'depend' (please try and make your questions clear) but if you mean does the fact that a helium filled balloon will float (or rise) depend on gravity? Then the answer is Yes. if you were to take a helium filled balloon to the space station and release it inside, it would not rise, it would behave just the same as if you released a bunch of keys.
Electricity is not directly affected by gravity. Gravity does not impact the flow of electricity through wires or circuits.
Weight is affected by gravity, while mass is not. Weight is the force exerted by gravity on an object, and it depends on the mass of the object and the strength of the gravity acting on it. Mass, on the other hand, is a measure of the amount of matter in an object and remains the same regardless of the gravitational field it is in.
Helium defies gravity because it is lighter than the surrounding air. This causes it to rise and float upwards, rather than being pulled down by gravity like heavier objects.
The weight of an object is the measurement that is affected by gravity. Gravity is what gives objects weight, causing them to be pulled downwards towards the Earth.