Answer:
Option c
Explanation:
In the allene, 
Central atom forms two sigma bond and two pi bond.
Hybridization of central atom = sp
Hybridization of two terminal C = 
Allene is a nonplanar molecules. This is because of the planes of two 
groups which are twisted 90 ° to each other.
Therefore, the two H atoms on one C lie above and below the plane defined by the other group.
Answer:
This is the conversion factor, we have to use:
44 g / 1mol
Explanation:
The reaction for the methane combustion is:
CH₄ + 2O₂ → CO₂ + 2H₂O
First of all we use this conversion factor to determine the moles of methane, we used.
50.6 g . 1 mol / 16 g = 3.16 mol
So ratio is 1:1, then 3.16 mol of methane will produce 3.16 moles of CO₂
To calculate the grams of produced dioxide:
3.16 mol . 44 g / 1mol = 139.04 g
B. They are composed of only one type of atom. This is your answer
V1/T1=V2/T2
(10)/(358K)=(V2)/(278)
V2=7.765363128 L
