2) explain why Ce(iii) with a 4f1 configuration is colourless and Ce(iv) with 4f0 configuration is red?​

If a || b and e || f, what is the value of y ?

The clouds are grey and ground is wet. a quantitative b qualitative

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.