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Explanation:
Supercooling is the process of chilling a liquid below its freezing point, without it becoming solid. A liquid below its freezing point will crystallize in the presence of a seed crystal or nucleus around which a crystal structure can form.
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Answer: 0.67 moles of ![N_2H_4](https://tex.z-dn.net/?f=N_2H_4)
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number
of particles.
To calculate the moles, we use the equation:
![\text{Number of moles of nitrogen}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{28.3}{28.02}=1mole](https://tex.z-dn.net/?f=%5Ctext%7BNumber%20of%20moles%20of%20nitrogen%7D%3D%5Cfrac%7B%5Ctext%7BGiven%20mass%7D%7D%7B%5Ctext%20%7BMolar%20mass%7D%7D%3D%5Cfrac%7B28.3%7D%7B28.02%7D%3D1mole)
![2N_2H_4(l)+N_2O_4(l)\rightarrow 3N_2(g)+4H_2O(g)](https://tex.z-dn.net/?f=2N_2H_4%28l%29%2BN_2O_4%28l%29%5Crightarrow%203N_2%28g%29%2B4H_2O%28g%29)
According to stoichiometry:
3 moles of
is produced by 2 moles of ![N_2H_4](https://tex.z-dn.net/?f=N_2H_4)
Thus 1 mole of
is produced by=
of ![N_2H_4](https://tex.z-dn.net/?f=N_2H_4)
Thus 0.67 moles of
are required to produce 28.3 g of
Answer and
Explanation:
Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green. Plants that use photosynthesis to make their own food are called autotrophs