The electron sea model for metals suggest that the valence electrons drift freely around the metal cations.
Answer: B
Explanation
The sea model of electron is used for describing the mechanism of metallic bonding.
The metallic bonding generally occurs between 2 or more metals leading to the formation of alloys.
According to electron sea model, the electrons which contributes to the metallic bond are mostly the valence electrons of the atoms, these valence electrons get de-localized and can move freely around the nuclei of other atoms.
Overall, it seems like nuclei of positive charge is surrounded by sea of negative electrons.
the god ran down the street
Answer:
is the change in enthalpy associated with the combustion of 530 g of methane.
Explanation:
Mass of methane burnt = 530 g
Moles of methane burnt = 
Energy released on combustion of 1 mole of methane = -890.8 kJ/mol
Energy released on combustion of 33.125 moles of methane :
is the change in enthalpy associated with the combustion of 530 g of methane.
Answer:
Because their Molar masses or their densities are almost the same.
Explanation:
Average molecular mass of the air is 28.97 g/mol.
Molar mass of nitrogen gas (N2) ≈ 2*14.01 = 28.02 g/mol
As we can see that these molar masses is to close.
To collect gas over the air, the gas should be very light, that means that its molar mass should be much less than molar mass of the air.
