No, because it is not possible to have half an element. Every atom is an element of some kind and if you split it in half or any other fraction it will become another element. Sometimes formulas are written as if there are half atoms or molecules but this is only because one of them is the important part. The calcium carbonate cement is composed of is one common example. It is often written as CaCO3.1/2 H2O because it is the calcium carbonate which is the important part. It really should be 2CaCO3.H2O
Pb is a compound.
Ag is the chemical symbol for silver, which is an element. It is not a compound.
HI is a compound. The Compound name is Hydrogen Iodide.
A single displacement reaction is a type of chemical reaction where a free element replaces another element in a compound. This occurs when a more reactive element displaces a less reactive element in a compound, forming a new compound and releasing the displaced element.
Gold is a pure element, not a compound, so it is homoatomic.
element. Sulfur dioxide (SO2) is a compound
KCl is a compound not an element.
Beryllium is an element. It is not a compound
cornstarch is a compound element.
First of all you have mispelled it as 'hellium' . It is 'HELIUM'. It is an element. It atomic No. is '2' , so therefore it is found in position number '2' in the Periodic Table, as 'He'. It is neither a compound nor a mixture. The chemical symbol for helium is 'He '. It's Atomic Mass is '4' It is compsed of 2 protons, 2 neutrons and two electrons. It is the MOST Noble(Inert) of all the elements. It does NOT react with anything. Therefore it exists 'monatomically' (single atoms). Its condensing point is 7 K ( - 266 oC) (Becomes a liquid) Its freezing point is 4 K . ( - 269 oC) (becomes a solid). The name 'helium' is from Classical Greece, and means 'from the Sun'(Helios), because two hydrogen atoms fuse together in the Sun , they form 'Helium'.
Mixture
if it dissolves its a compound if not its an element.
NO = Nitrous Oxide - compound No = Nobelium - element
It is a compound Carbon is an element.
salt is a compound. it is not an element
No, energy is NOT an element, a compound or a mixture.
To calculate the grams of an element in a compound, you need to find the molar mass of the element and the compound. Then, use the formula: (mass of element/molar mass of compound) x molar mass of element. This will give you the grams of the element in the compound.