Different elements have different valences which affect how many hydrogen atoms they will bind with.
Hydrogen
Carbon and hydrogen.
Yes. Atoms are unique to whichever element they compose. They have different amounts of electrons, protons and (neutrons). For Example: Hydrogen Atom: 1 electron, 1 proton. Oxygen Atom: 8 electrons, 8 protons, 8 neutrons.
Compounds like sodium pick up the relative amounts of each element present in their composition through the positive ions that they contain. Like water is a composition of hydrogen and oxygen, the positive ions of hydrogen attract the ions in oxygen.
It is different for each element. In hydrogen, there is one.
A trace element.
Each element has a different molar mass and Molarity, using stoichiometry the conversion of molar mass can explain why.
Hydrogen
No. They have the same mass number, but different amounts of protons, so they are different elements. If they were the same element, they would have the same name.
Hay is going to be mostly carbon and hydrogen with trace amounts of many other elements.
Hydrogen is more reactive than the other 2 elements
Carbon and hydrogen.
The isotopes of hydrogen are all hydrogen. They have the same number of protons, or atomic number, which is unique to each element.
Zinc is a trace element as the others are found in large amounts.
It varies depending on the element. The simplest hydrogen atom, for instance, has only one proton and one electron. One type of uranium has 92 protons, 92 electrons and 51 neutrons. Different atoms have different amounts of matter.
Carbon
No. They are two different elements.