Answer:
The correct option is methane :
.
Explanation:
Average speed of the gas molecules id given by expression:

k = Boltzmann cosnatnt
T = Temperature of the gas molecules = 355 K
m = molecular mass of the molecule

Molar mass of methane = 18 g/mol
Molar mass of neon = 20.18 g/mol
Molar mass of ethene = 28 g/mol
Molar mass of chlorine gas = 70 g/mol
Lower the value of molar mass of gas molecule higher will be the average speed.So, from the given options methane gas greatest average seed because it has lowest molecular mass
Answer:
4 significant figures.
Explanation:
All non-zero numbers are significant figures.
Answer:
divide the # of molecules by avogadros number and get 3.48 x 10^-6
Explanation:
Answer:
Oxybenzone contains ether, phenol and ketone (-CO) functional group alonq with two aromatic rings.
Explanation: