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What is the mass of a hydrogen nucleus?
The mass of a hydrogen nucleus is approximately 1 atomic mass unit.
What is the mass of an atomic nucleus?
The hydrogen-1 nucleus is the same as the mass of a proton - since it is a proton. The proton's mass is 1.67×10−27 kg. Other nuclei have several times this mass - up to about 250 times the mass of a hydrogen nucleus.
What does adding a nutron to an atoms nucleus do the atom mass?
Adding a neutron to an atom's nucleus increases the atom's mass without changing its charge. Neutrons contribute to the stability of the nucleus by balancing the repulsion of positively charged protons.
How are atoms identified?
Atoms are normally identified according to the element of which that atom is an example. And that, in turn, is determined by the number of protons in the atom's nucleus. So, any atom that has just one proton is a hydrogen atom. If it has two protons it is a helium atom. And so forth.
What subtomic particle account for most all of an atoms mass?
Protons and neutrons, which are found in an atom's nucleus, account for most of an atom's mass. Electrons, which orbit the nucleus, have much less mass compared to protons and neutrons.
What you hydrogens mass number?
Hydrogen is a non metal element. Atomic mass of it is 1.
What is the mass of a hydrogen nucleus?
The mass of a hydrogen nucleus is approximately 1 atomic mass unit.
Why one mole of hydrogen molecule and one mole of hydrogen atoms have different masses?
One mole of hydrogen molecules (H2) contains 2 hydrogen atoms per molecule, while one mole of hydrogen atoms contains single hydrogen atoms. Since the mass of a hydrogen atom is approximately half the mass of a hydrogen molecule, the molar mass of hydrogen molecules is higher than the molar mass of hydrogen atoms.
Lost of an atoms mass is in the nucleus?
Almost all of an atom's mass is in the nucleus.
What does adding a nuetron to an atoms nucleus do to the atoms mass?
Since a neutron has mass, adding a neutron to an atomic nucleus increases the atom's mass.
What is the most of the mass of an atoms?
The nucleus.
What can you infer about helium from the fact that it is made by a nuclear fusion reaction inside the sun?
That the mass of a helium nucleus is larger than the mass of the hydrogen nucleus. Also, since the star uses this process to produce energy, that the helium atom has less energy than the original hydrogen atoms - and therefore also less mass.
What can you infer about helium from the fact that it is made by nuclear fusion reactions inside the sun?
That the mass of a helium nucleus is larger than the mass of the hydrogen nucleus. Also, since the star uses this process to produce energy, that the helium atom has less energy than the original hydrogen atoms - and therefore also less mass.
How many atoms does the hydrogen have?
Three-quarters of the Sun's mass is hydrogen. How many hydrogen atoms are in the Sun?
How can that the body has 10 percent hydrogen and 63 percent of the atoms are hydrogen?
Hydrogen is the lightest of all elements, having atoms that are only a fraction of the mass of all other elements. For example, an oxygen atom has about 16 times the mass of a hydrogen atom. So while a water molecule contains 2 hydrogen atoms and 1 oxygen atom (and water makes up most of the human body), the single oxygen atom accounts for most of the mass of the molecule.
What can you infer about helium from the fact that it's made by nuclear fusion reactions inside the sun?
That the mass of a helium nucleus is larger than the mass of the hydrogen nucleus. Also, since the star uses this process to produce energy, that the helium atom has less energy than the original hydrogen atoms - and therefore also less mass.
Why if sucrose is 51.5 percent oxygen by mass and only 6.4 percent hydrogen by mass is there twice as many hydrogen atoms than oxygen atoms?
The molecular formula of sucrose is C₁₂H₂₂O₁₁. From this formula, we can see that there are 12 hydrogen atoms and 11 oxygen atoms in sucrose. Despite oxygen accounting for 51.5% of the mass and hydrogen only 6.4%, the ratio of hydrogen atoms to oxygen atoms is determined by the molecular formula, not the mass percentages.
