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Inorganic Chemistry
The observed rotation of 2.0g of a compound in a 50ml of solution in a polarimeter tube 20cm long is +138°, what is the specific rotation of the compound?
Inorganic Chemistry
How much HCL-35% purity is required to dissolve 100 grams of solder (tin 60%, lead-40%)?
Inorganic Chemistry
based on the properties and uses of aluminium and iron, evaluate the methods of their production.
Inorganic Chemistry
How many grams of potassium carbonate is needed to react completely with
800 mL of 0.500 M HBr?
2HBr (aq) + K2CO3 (aq) 2KBr (aq) + CO2 (g) + H2O (l)
800 mL of 0.500 M HBr?
2HBr (aq) + K2CO3 (aq) 2KBr (aq) + CO2 (g) + H2O (l)
Inorganic Chemistry
Using the properties of the substances involved, compare the method of commercial producing of aluminium from bauxite with the production of iron from iron ore.
Inorganic Chemistry
if total quantity of 3 % antifoam contains 100% silicon, by diluting 100% silicon with 97% exxol d, how much will be the final % of silicon?
Inorganic Chemistry
How does antimony kill you? why is it toxic?
Inorganic Chemistry
Explain the paramagnetic nature of oxygen molecule using molecular orbital theory.
Inorganic Chemistry
3) Arrange substances with respect to increase of adsorption from aqueous solutions on the activated charcoal:
a- benzene, phenol, glucose
b- phenol, glucose, benzene
c- benzene, glucose, phenol
d- glucose, phenol, benzene
e- phenol, benzene, glucose
4) If the length of hydrocarbon radical in molecule of surface-active substance is increased, describe which of the following statements will be correct:
a- hydrophylic properties become stronger
b- surface tension decreases
c- surface activity reduces
d- hydrophobic properties become weaker
e- adsorption decreases
a- benzene, phenol, glucose
b- phenol, glucose, benzene
c- benzene, glucose, phenol
d- glucose, phenol, benzene
e- phenol, benzene, glucose
4) If the length of hydrocarbon radical in molecule of surface-active substance is increased, describe which of the following statements will be correct:
a- hydrophylic properties become stronger
b- surface tension decreases
c- surface activity reduces
d- hydrophobic properties become weaker
e- adsorption decreases
Inorganic Chemistry
3) Arrange substances with respect to increase of adsorption from aqueous solutions on the activated charcoal:
a- benzene, phenol, glucose
b- phenol, glucose, benzene
c- benzene, glucose, phenol
d- glucose, phenol, benzene
e- phenol, benzene, glucose
4) If the length of hydrocarbon radical in molecule of surface-active substance is increased, describe which of the following statements will be correct:
a- hydrophylic properties become stronger
b- surface tension decreases
c- surface activity reduces
d- hydrophobic properties become weaker
e- adsorption decreases
a- benzene, phenol, glucose
b- phenol, glucose, benzene
c- benzene, glucose, phenol
d- glucose, phenol, benzene
e- phenol, benzene, glucose
4) If the length of hydrocarbon radical in molecule of surface-active substance is increased, describe which of the following statements will be correct:
a- hydrophylic properties become stronger
b- surface tension decreases
c- surface activity reduces
d- hydrophobic properties become weaker
e- adsorption decreases
