Answer:
1) 72 mole
2)1152 mole
3)256 mole
4) 2890 mole
Explanation:
very important for u
number of mole= given mass/molecular mass
symbolically : n= m/Mm
1) first atomic mass (carbon =12)
n=6gram × 12gram /mole
n=72mole
2) atomic mass (Magnesium =24)
48 gram × 24 gram /mole
n= 1152 mole
3)atomic mass (oxygen = 16×2=32
n= 8 gram × 32 gram/ mole
n= 256mole
4) atomic mass ( Nitrogen =14 , hydrogen = 1×3
14+3=17
n= 170 gram × 17 gram / mole.
n= 2890 mole
