How much calcium hydroxide in grams is needed to produce 1.5 l of a 0.25m solution?

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.

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Why is it incorrect to balance a chemical equation by changing the subscripts? explain.