Answer: 1. 0.045moles
2. 2.10 grams
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
1. [tex]\text{Number of moles of zinc nitrate}=\frac{8.51g}{189.36g/mol}=0.045moles[/tex]
2. Mass of [tex]C_2H_4=moles\times {\text {Molar mass}}=0.075moles\times 28.05g/mol=2.10g[/tex]
