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How many protons does an atom of Carbon have if it has a plus 2 charge and a mass of 15?
An atom of Carbon with a mass of 15 and a +2 charge must have 13 protons. This is because the atomic number of Carbon is 6, so a neutral Carbon atom would have 6 protons. Since the atom has a +2 charge, it has lost two electrons, making it a cation, and giving it 2 more protons than electrons.
Which particles determine the mass of an atom?
The atomic mass unit is defined to be 1/12 of the mass of a carbon-12 atom. Atomic masses can determined by weighing molar amount of an isotope. Absolute masses (in kg) are determined by measuring the amount that charged atoms are deflected by magnets, since if you know the charge you can calculate mass from the amount of deflection.
What is equal to the mass of the atom?
the atoms of different elements weigh different.it depends as to which element you are referring to.for example an element with the atomic mass 4 can be matched by 2 atoms of a lighter element with the atomic mass 2
What is the mass of an atom with 2 neutrons and 1 proton?
The electrons are of such insignificant mass relative to that of the protons and neutrons, therefore we do not count them when calculating atomic mass, so the mass = 2 protons + 2 neutrons = mass number 4.
Examples of the law of definite composition?
The law of definite composition states that chemical compounds always contain the same elements in the same proportions by mass. For example, water always consists of two hydrogen atoms and one oxygen atom in a 2:1 ratio by mass. Additionally, carbon dioxide always contains one carbon atom and two oxygen atoms in a 1:2 ratio by mass.
What 2 parts of an atom have the same mass?
Proton and neutron have similar mass, but not identical.
What is the mass number of this atom?
2
What 2 parts of an atom give it is mass?
The atomic mass of an element depends on the weight of the protons, neutrons, and electrons (almost negligible) in one mole (6.022 x 10^23 atoms) of the element.
What is a direct consequence of the number of protons and neutrons in an atom's nuceuls?
Number of proton = atom numberfor example:Hydrogen has 1 proton and its atom number is also 1Number of neutrons + number of protons = mass numberfor example:Hydrogen have 1 proton and and NO neutrons, so the mass number is 1Helium has 2 protons and and 2 neutrons, so the mass number is 4
If a hydrogen atom has a mass of 3 is it an isotope?
No, a hydrogen atom with a mass of 3 is not an isotope of hydrogen. Hydrogen isotopes include protium (mass 1), deuterium (mass 2), and tritium (mass 3).
What is the total mass of an atom having 2 neutrons 2 electrons and 2 protons?
It is about the helium gas. mass number of it is 4.
What is the mass of a radium atom?
The atomic mass of a radium atom is approximately 226. It is a highly radioactive element found in group 2 of the periodic table.
What percentage of an atom's mass is caused by the Higgs boson?
About 2% of an atom's mass is caused by the Higgs boson. The rest is due to the effect of the Strong Nuclear Force.
When it loses two electrons to become a calcium ion what is it's new mass?
38 amu EDIT: This answer is INCORRECT. Electrons do not have significant mass.
How many protons does an atom of Carbon have if it has a plus 2 charge and a mass of 15?
An atom of Carbon with a mass of 15 and a +2 charge must have 13 protons. This is because the atomic number of Carbon is 6, so a neutral Carbon atom would have 6 protons. Since the atom has a +2 charge, it has lost two electrons, making it a cation, and giving it 2 more protons than electrons.
What is the mass number of a helium atom that has 2 protons and 2 neutrons?
Number of neutrons = Mass number - Number of protons = 4 - 2 = 2 neutrons
This atom is a of helium -4?
The atom is an isotope of helium called helium-4. It contains 2 protons and 2 neutrons in its nucleus, giving it a total atomic mass of 4 atomic mass units.
