Answer:
See explaination
Explanation:
Hydrophobic literally means “the fear of water”. Hydrophobic molecules and surfaces repel water. Hydrophobic liquids, such as oil, will separate from water. Hydrophobic molecules are usually nonpolar, meaning the atoms that make the molecule do not produce a static electric field.
Please see attachment for the step by step solution of the given problem.
Answer: a) ![2K_2CrO_4+3Na_2SO_3+10HCl\rightarrow 4KCl+3Na_2SO_4+2CrCl_3+5H_2O](https://tex.z-dn.net/?f=2K_2CrO_4%2B3Na_2SO_3%2B10HCl%5Crightarrow%204KCl%2B3Na_2SO_4%2B2CrCl_3%2B5H_2O)
b) 1 mole of
is produced.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The skeletal equation is:
![K_2CrO_4+Na_2SO_3+HCl\rightarrow KCl+Na_2SO_4+CrCl_3 +H_2O](https://tex.z-dn.net/?f=K_2CrO_4%2BNa_2SO_3%2BHCl%5Crightarrow%20KCl%2BNa_2SO_4%2BCrCl_3%20%2BH_2O)
The balanced equation will be:
![2K_2CrO_4+3Na_2SO_3+10HCl\rightarrow 4KCl+3Na_2SO_4+2CrCl_3+5H_2O](https://tex.z-dn.net/?f=2K_2CrO_4%2B3Na_2SO_3%2B10HCl%5Crightarrow%204KCl%2B3Na_2SO_4%2B2CrCl_3%2B5H_2O)
Thus the coefficients are 2, 3 , 10 , 4 , 3 , 2 and 5.
b) Oxidation: ![2I-^-\rightarrow I_2+2e-^-](https://tex.z-dn.net/?f=2I-%5E-%5Crightarrow%20I_2%2B2e-%5E-)
Reduction: ![SO_4^{2-}+2e^-+4H^+\rightarrow SO_2+2H_2O](https://tex.z-dn.net/?f=SO_4%5E%7B2-%7D%2B2e%5E-%2B4H%5E%2B%5Crightarrow%20SO_2%2B2H_2O%3C%2Fp%3E%3Cp%3E)
Net reaction: ![2I-^-+SO_4^{2-}+4H^+\rightarrow I_2+SO_2+2H_2O](https://tex.z-dn.net/?f=2I-%5E-%2BSO_4%5E%7B2-%7D%2B4H%5E%2B%5Crightarrow%20I_2%2BSO_2%2B2H_2O)
When 1 mole of
is produced, 1 mole of
is produced.
Answer:
Mass of heptane = 102g
Vapor pressure of heptane = 454mmHg
Molar mass of heptane = 100.21
No of mole of heptane = mass/molar mass = 102/100.21
No of mole of heptane = 1.0179
Therefore the partial pressure of heptane = no of mole heptane *Vapor pressure of heptane
Partial pressure of heptane = 1.0179*454mmHg
Partial pressure of heptane = 462.1096 = 462mmHg
the partial pressure of heptane vapor above this solution = 462mmHg
Answer:
La masa atómica del hierro es 55.847 gramos por mol.
Explanation:
Las masas molares de
,
,
y
son 53.940 gramos por mol, 55.935 gramos por mol, 56.935 gramos por mol y 57.933 gramos por mol, respectivamente. La masa atómica del hierro se determina mediante el siguiente promedio ponderado:
![M_{Fe} = \frac{5.82}{100}\times \left(53.940\,\frac{g}{mol} \right)+\frac{91.66}{100}\times (55.935\,\frac{g}{mol})+\frac{2.19}{100}\times \left(56.935\,\frac{g}{mol} \right)+\frac{0.33}{100}\times \left(57.933\,\frac{g}{mol} \right)](https://tex.z-dn.net/?f=M_%7BFe%7D%20%3D%20%5Cfrac%7B5.82%7D%7B100%7D%5Ctimes%20%5Cleft%2853.940%5C%2C%5Cfrac%7Bg%7D%7Bmol%7D%20%5Cright%29%2B%5Cfrac%7B91.66%7D%7B100%7D%5Ctimes%20%2855.935%5C%2C%5Cfrac%7Bg%7D%7Bmol%7D%29%2B%5Cfrac%7B2.19%7D%7B100%7D%5Ctimes%20%5Cleft%2856.935%5C%2C%5Cfrac%7Bg%7D%7Bmol%7D%20%5Cright%29%2B%5Cfrac%7B0.33%7D%7B100%7D%5Ctimes%20%5Cleft%2857.933%5C%2C%5Cfrac%7Bg%7D%7Bmol%7D%20%5Cright%29)
La masa atómica del hierro es 55.847 gramos por mol.
First one is true second one is False