4.2 g of MgO
Magnesium has three stable isotopes: magnesium-24 (with an atomic mass of about 24 amu), magnesium-25, and magnesium-26. Approximately 79% of naturally occurring magnesium consists of magnesium-24, meaning that about 79% of magnesium atoms have a mass of exactly 24 amu. The remaining percentage is made up of the other isotopes.
since the total is 68 we will subtract 42 to find the amount of oxygen which is 26. u can do this one of two ways 1- 42:26 is the ratio of nitrogen to oxygen in the following compound, so no it is not nitrous oxide because 42/26 = 1.62 while 7/4 = 1.75 close but not it
The atomic mass of magnesium is 24 because it is a weighted average of the isotopes of magnesium found in nature. The most abundant isotopes of magnesium are Magnesium-24, Magnesium-25, and Magnesium-26, with natural abundances of approximately 78.99%, 10.00%, and 11.01% respectively. The atomic mass takes into account both the mass and relative abundance of each isotope.
The molecular weight of oxygen is 16. Its atomic symbol is O and atomic number is 8. It is a gas in its natural state.
The atomic mass of oxygen is approximately 16.00 atomic mass units (amu). This value represents the average mass of an oxygen atom, taking into account its different isotopes and their natural abundance.
If you really meant to ask "What is the mass defect of oxygen-16," this is how you do it. mass defect = # of protons x mass of one proton + # of neutrons x mass of one neutron - mass of the nucleus The atomic number of oxygen-16 is 8, so there are 8 protons. The mass of one proton is approximately 1.0073 amu. The Atomic Mass of oxygen-16 is 16, so there are 8 neutrons in oxygen-16. (Atomic mass of 16 minus atomic number of 8 = # of neutrons in oxygen-16.) The mass of one neutron is approximately 1.0087 amu. The mass of the nucleus of oxygen is 16. Now substitute the values into the "mass defect" equation: mass defect = 8x1.0073+8x1.0087-16=approximately 0.128 amu.
The mass number is the sum of protons and neutrons in an atom. Since magnesium has 12 protons, a magnesium atom with 14 neutrons would have a mass number of 26 (12 protons + 14 neutrons = 26 mass number).
Number of protons in oxygen atom: 8Mass of one proton = 1.67262158 x 10-27 KgMass of protons in one oxygen atom = 1.338097264 x 10-26 KgMass of one neutron: 1.674927293 x 10-27 KgMass of neutrons in one oxygen atom: 1.33994183 x 10-26 (for 8 neutrons)Mass of one oxygen atom: 2.67803909 x 10-26 (protons + neutrons).Now double the mass of one oxygen atom to get the mass of one molecule.Therefore, mass of a single oxygen molecule is 5.35607818 x 10-26 kg.
Manesium 24 has 12 electrons, protons and neutrons.
Magnesium has three stable isotopes: magnesium-24 (with an atomic mass of about 24 amu), magnesium-25, and magnesium-26. Approximately 79% of naturally occurring magnesium consists of magnesium-24, meaning that about 79% of magnesium atoms have a mass of exactly 24 amu. The remaining percentage is made up of the other isotopes.
since the total is 68 we will subtract 42 to find the amount of oxygen which is 26. u can do this one of two ways 1- 42:26 is the ratio of nitrogen to oxygen in the following compound, so no it is not nitrous oxide because 42/26 = 1.62 while 7/4 = 1.75 close but not it
The atomic mass of magnesium is 24 because it is a weighted average of the isotopes of magnesium found in nature. The most abundant isotopes of magnesium are Magnesium-24, Magnesium-25, and Magnesium-26, with natural abundances of approximately 78.99%, 10.00%, and 11.01% respectively. The atomic mass takes into account both the mass and relative abundance of each isotope.
An unknown element contains 24 protons, 21 electrons,and has mass number 54
If you really meant to ask "What is the mass defect of oxygen-16," this is how you do it. mass defect = # of protons x mass of one proton + # of neutrons x mass of one neutron - mass of the nucleus The atomic number of oxygen-16 is 8, so there are 8 protons. The mass of one proton is approximately 1.0073 amu. The atomic mass of oxygen-16 is 16, so there are 8 neutrons in oxygen-16. (Atomic mass of 16 minus atomic number of 8 = # of neutrons in oxygen-16.) The mass of one neutron is approximately 1.0087 amu. The mass of the nucleus of oxygen is 16. Now substitute the values into the "mass defect" equation: mass defect = 8x1.0073+8x1.0087-16=approximately 0.128 amu.
The element with a mass number of 16 and atomic number 8 is oxygen. It has 8 protons and typically 8 neutrons in its nucleus, giving it a mass number of 16, which is the total number of protons and neutrons.
The molecular weight of oxygen is 16. Its atomic symbol is O and atomic number is 8. It is a gas in its natural state.
The atomic mass of oxygen is approximately 16.00 atomic mass units (amu). This value represents the average mass of an oxygen atom, taking into account its different isotopes and their natural abundance.