There are four solutions: a, b, c, d. solution a yields 3 protons upon ionization, solution b is an electron pair donor, solution c is an oh- producer, and solution d is an electron pair acceptor. which of the following statements is true.
a)c is an acid
b)d is a base
c)b is a base
d)a is a triprotic base

Can anyone (a-level) a student was analysing a carbonate compound, mco3, containing an unknown group 2 metal, m. the student carried out thermal decomposition on 0.730g of the carbonate and measured the volume of gas produced. mco3 (s) mo (s) + co2 (g) the student collected and measured 120cm3 of carbon dioxide. 1 mol of carbon dioxide occupies 24 000 cm3 under these conditions. calculate the molar mass of the group 2 carbonate and hence deduce the identity of the group 2 metal, m.

Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g

The ammonia molecule in the diagram has the observed bond orientation because