Number of moles =
![\frac{mass (g)}{Molar mass}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bmass%20%28g%29%7D%7BMolar%20mass%7D%20)
so to calculate molar mass (Molecular weight of compound):
Molecular weight =
![\frac{mass (g)}{number of moles}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bmass%20%28g%29%7D%7Bnumber%20of%20moles%7D%20)
=
![\frac{12.8 g}{0.256 mole}](https://tex.z-dn.net/?f=%20%5Cfrac%7B12.8%20g%7D%7B0.256%20mole%7D%20)
= 50 g / mole
Now we calculate molecular weight of each compound in choices:
a) C₂H₄O = 44
b) CO₂ = 44
c) CH₃Cl = 50.4 ALMOST 50 so this is the correct answer
d) C₂H₆ = 30
Answer:
B
Explanation:
The warmer the water, the more space it takes up, and the lower its density.
The planets speed as they orbit the sun
I dont understand , what u write