The atomic mass of sodium is 23. Then the gram-atomic mass of sodium is:
The molar mass of Z is 20 g. Find the mass of 1 atom of Z.
If one mole of sodium phosphate is equal to molecular mass of sodium phosphate. Then what us the mass of 0.145 mol of sodium phosphate. (Na = 23 amu, P = 31 amu, O = 16 amu)
If atomic mass of sodium is 23 a.m.u., then the mass of 3.01 x 1023 sodium atoms is: