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In naturally occurring hydrogen, most of the mass is that of the hydrogen-1 isotope.
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Are hydrogen 1 and hydrogen 2 isotopes?
Yes they are. Also note that hydrogen 2 is more usually called deuterium. And hydrogen 3 is called tritium.
What is the mass percentage of N in NH3?
Nitrogen has an average atomic mass of about 14 while hydrogen has an average atomic mass of about 1, so the total molecular mass of NH3 is about 17. From this we find that the mass percentage of N in NH3 is about 14/17 = 82%. To get more precise numbers, look up the exact atomic masses from a periodic table.
Does water have more hydrogen or oxygen in it?
By number of atoms it has more hydrogen, by mass it has more oxygen. Each water molecule contains two hydrogen atoms and one oxygen atom. However, a typical oxygen atom has about 16 times the mass of a typical hydrogen atom.
What do most elements contain a mixture of?
Most elements contain a mixture of two or more isotopes.
What are elements that come in pairs?
Such elements are called "diatomic." There are exactly seven of them: • Bromine (Br) • Chlorine (Cl) • Fluorine (F) • Hydrogen (H) • Iodine (I) • Nitrogen (N) • Oxygen (O)
When a pair of hydrogen isotopes is fused is the mass of the product nucleus more or less the sum of the masses of the two hydrogen nuclei?
Because of conservation of matter the nucleus would weigh the same as the sum of the two isotopes.
How does the measured mass of hydrogen compare with its nuclear mass due to one proton?
The mass of the whole hydrogen atom includes the mass of an electron as well as the proton. The proton mass is nearly 2000 (actually about 1836) times greater than the electron mass. So, the mass of the hydrogen atom isn't much different from the mass of the proton. It's also possible this question could be about isotopes. Hydrogen has rare isotopes with one or two neutrons in the nucleus. So, the average mass of hydrogen, as measured, is usually a bit more than you would expect from just a proton and electron. However, these other isotopes are very rare and the effect on the mass of a sample of hydrogen would be very small.
What is the difference between mass of hydrogen and mass of electron?
There are different isotopes of hydrogen. Assuming you mean the difference in atomic mass between a proton and an electron though, the atomic mass of a proton is about 1836 times greater (approx 1.007 amu), and the neutron is a little more than that (approx 1.009 amu).
How does the measured mass of hydrogen compare with its nuclear mass?
Nearly the entire mass of an atom is comprised by its nucleus. The hydrogen atom is no exception. The mass of a typical hydrogen atom (known as protium, P) is 1amu, which tells you that it consists of 1 proton. Of course, there's also 1 electron, but this electron's mass doesn't come into play (an electron's mass is about 0.0005amu). On the Periodic Table, the atomic mass of hydrogen comes in at about 1.00794. This is a result of the small of percentage of all hydrogen out there that consists of more massive isotopes. H-2 (deuterium, D) has 1 neutron; H-3 (tritium, T) has 2 neutrons. The 1.00794 is a weighted average of these relative abundances. Another viewpoint: I think the answer is simpler than that. The question may simply be about the fact that the measured mass includes an electron, but the nuclear mass does not. It depends a bit on how you interpret this question. Anyway, the proton has about 1836 times the mass of an electron. So, the mass of a hydrogen atom is almost the same as the mass of the nucleus, as mentioned above. Incidentally, the definition of atomic mass (which is slightly different from "nuclear mass") is not quite as straightforward as some people may think. The atomic mass of "protium" is, in fact, not 1 amu, but about 1.00782 amu. So, for the atomic mass of hydrogen, the mass of the electron is actually slightly more important than the effect of the small amounts of heavy isotopes. You may want to click on the link below for more details on the atomic mass of hydrogen. (Strictly speaking I think you should call that the "relative atomic mass" when talking about all the isotopes together in a sample, but that's a bit pedantic here.) The Wikipedia page "Isotopes of hydrogen" is useful too. Also, there's a link below to a "related question".
What has more mass hydrogen or helium?
Helium has more mass than hydrogen.
Is the atomic mass used for the mass of an element which has isotopes?
Yes, it must be used as all elements have one or more isotopes and all elements have an atomic mass.
The atomic mass of hydrogen is 1.00794 Why is this number not rounded off to 1?
because it 's the lightest element in the periodic table.The amu is defined based on carbon-12, so all other isotopes of elements are non-integer masses. This is sometimes referred to as the "mass defect".The atomic mass of an element is the weighted average of the atomic masses of its natural isotopes. For hydrogen these are hydrogen-1 and hydrogen-2 (deuterium).
Are hydrogen 1 and hydrogen 2 isotopes?
Yes they are. Also note that hydrogen 2 is more usually called deuterium. And hydrogen 3 is called tritium.
Are they more than a single neutron in an atom?
yes (except for the two isotopes of hydrogen).
How percentage of oxygen is more in water than hydrogen?
This is true for mass-%. Oxygen is 16 times heavier than hydrogen, that outfigures the double elemental ratio for hydrogen to oxygen (2:1) by factor 8 times.
List the isotopes used in agriculture?
There are far too many isotopes of different elements to list them here. Just as one example, most hydrogen is 1H, but 2H is the hydrogen in deuterium, which has several industrial uses. A more specific question will get a more specific answer.
Are hydrogen 1 and hydrogen 2 ions?
No, they are isotopes. An ion is an atom that has an electric charge because it has gained or lost one or more electrons. An isotopes is a variant of a given element with a different number of neutrons, which does not affect the charge.
