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In general, an increase in temperature increases the solubility of a solute in water because?
Which of the following statements is FALSE about isotopes of the same element?
A particle that contains 8 proton, 9 neutrons and 7 electrons could be written as?
A liquid begins to boil when?
Two cylinders A and B each contains 30 cm\(^3\) of oxygen and nitrogen respectively at the same temperature and pressure. If there are 5.0 moles of nitrogen, then the mass of oxygen is?
What volume of oxygen will remain after reacting 8cm\(^3\) of hydrogen with 20cm\(^3\) of oxygen?
The number of hydrogen ions in 4.9 g of tetraoxosulphate (IV) acid is?
(S = 32, O =16, H = 1, Avogadro Number = 6.02 x 10\(^{23}\) )
Chromatography is used to separate components of mixtures which differ in their rates of?
From the above diagram, the caustic soda in the conical flask serves to
When sodium ethanoate is treated with a few drops of concentrated tetraoxosulphate(vi)acid. one of the products is
which of these metals CANNOT replace hydrogen from alkaline solutions?