How many molecules are in 12.8 g n2o4

To calculate number of molecules, we first need to calculate the number of moles of N₂O₄.

Number of moles of N₂O₄ = \frac{Given mass}{Molar mass of N₂O₄}

Molar mass of N₂O₄= 92 g/mol

Given mass of N₂O₄= 12.8 g

Number of moles of N₂O₄=\frac{Given mass}{Molar mass of methane}

=\frac{12.8}{92}

= 0.139 mol

Number of molecules of N₂O₄ = 0.139\times 6.023 \times 10^{23}

= 8.37 × e²²

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .