If a carbon atom can form four covalent bonds, it also has four valence electrons. For neutral atoms, the number of valence electrons the same as an atom's main group number.
Cl2O but the two is a little two after Cl
Answer:
Molar mass (M) = mass(m) / number of moles (n)
To find the mass of Al2O3 first calculate it's molar mass
thus
M(Al2O3) = (27×2) + (16 × 3)
= 54 + 48
= 102g/mol
Mass of Al2O3 = molar mass × number of moles
= 102 × 0.513
= 52.326g of Al2O3
Hope this helps
Answer:
A device designed to transmit electromagnetic waves through the air should be developed.
simple dimensional analysis:
8.2 grams * 1 mol / 22.99 grams * 6.02 x 10^23 atoms / mol = 2.1 x 10^23 atoms
