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If 24.4 g of lead(II) trioxonitrate(V) were dissolved in 42 g of distilled water at 20 °C, calculate the solubility of the solute in g dm−3.
581.000
0.581
5.810
58.100
An example of a hygroscopic substance is
CuO(s)
MgCl2(s)
CaCl2(s)
NaOH(s)
Steam changes the colour of anhydrous cobalt(II) chloride from
White to red
Blue to white
Blue to pink
White to blue
The constituent of air that acts as a diluent is
Nitrogen
Carbon(IV) oxide
Noble gases
Oxygen
The bond formed between two elements with electron configurations 1s2 2s2 2p6 3s2 and 1s2 2s2 2p4 is
Metallic
Covalent
Dative
Ionic
