1mole of propane weighs
12g×3+1g×8
36g+8g
44g
6.023×10²³----------------44g
5.83×10¹⁷-------------------x
5.83×10¹⁷×44g=x×6.023×10²³
(256.52×10¹⁷g)÷6.023×10²³=x
x=42.59×10¹⁷‐²³
x=4.26×10-⁶×10
x=4.26×10-⁵
answer
4. 4.27×10-⁵
