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What else can I help you with?
Can helium be a mixture?
Helium is an element not a mixture.
Is the helium in a balloon a substance or a mixture?
Helium is an element (and therefore a pure substance) yes
Is helium in a balloon a pure substance not a mixture?
In theory it is a pure element. However, due the the cost of obtaining really pure helium, it is likely to contain trace amounts of other gases.
Is helium gas a homogeneous mixture or heterogeneous mixture?
Neither. Helium is not a mixture at all, it is a pure substance.
Is helium gas a homogeneous mixture or a heterogeneous mixture?
Neither. Helium is not a mixture at all, it is a pure substance.
Why do helium-filled balloons raise in air?
Because helium is a less dense gas than a general air mixture
What is the mixture 15ml of oxygen and 5ml of helium?
A mixture of oxygen and helium is used in diving.
Is helium a gaseous mixture at room temperature?
Helium is gaseous but it is not a mixture - it is a chemical element.
Is helium an element molecule or mixture?
Helium is an element.
Is helium is pure or mixture?
Helium is a pure substance
Is helium a gaseous mixture?
No - it is an element all in itself. An example of a gas mixture is carbon dioxide, made of a mixture of oxygen and carbon. So helium is just helium; nothing mixed in with it.
Is helium and air a heterogeneous mixture?
No. It will be a homogeneous mixture of gases.
