30 amu
30 amu (atomic mass units)
The atomic weight of nitrogen is approximately 14.007 atomic mass units (u).
14 A proton has an atomic mass of approximately 1 AMU. A neutron also has an atomic mass of approximately 1 AMU. For most purposes, the atomic mass of an electron is considered to be negligible. Without knowing the number of protons this atom contains, one cannot calculate the atomic mass of the atom.
Average weight of an element expressed in Atomic Mass units.
Proton: 1,007 276 466 77(10) atomic units of mass (u) Neutron: 1,008 664 915 6 (6) atomic units of mass (u) Electron: 5,485 799 094 3(23).10-4 atomic units of mass (u)
30 amu (atomic mass units)
The atomic weight of nitrogen is approximately 14.007 atomic mass units (u).
For this you need the atomic (molecular) mass of NO. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel. NO=30.0 grams6.64 grams NO / (30.0 grams)= .221 moles NO
1.4 g*convert g to mol*Pb=207.2 amu (atomic mass)Cl=35.453 amu (atomic mass)since it's PbCl2, 207.2 + 35.453 + 35.453=278.1061.4/278.106=.005 mol*use Avogadro's number to find formula units*.005 x 6.02E10^23 --> 3.03E10^22 formula units PbCl2
14 A proton has an atomic mass of approximately 1 AMU. A neutron also has an atomic mass of approximately 1 AMU. For most purposes, the atomic mass of an electron is considered to be negligible. Without knowing the number of protons this atom contains, one cannot calculate the atomic mass of the atom.
Depends on the number of formula units. In one formula unit there are 4 atoms.
Assuming the urea has the normal grade of 46% nitrogen, it has a total of 100 pounds, or units, of nitrogen.
Atomic mass units
Cobalt is an atomic mass of 58.93 atomic mass units
The element with the atomic number 15 is Phosphorus.
For this you need the atomic (molecular) mass of NaCl. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel. NaCl=58.5 grams38.0 grams NaCl / (58.5 grams) = .650 moles NaCl
The mass decreases by 4 units and the atomic number by two units.