Balancing Chemical Equations - 7 Problems 1. Ca(OH)2 + Al2(SO4)3 → CaSO4 + Al(OH)3 2. PbSO4 → PbSO3 + O2 3. NH3 + I2 → N2I6 + H2 4. H2O + SO3 → H2SO4 5. H2SO4 + NH4OH → H2O + (NH4)2SO4 6. NaBr + H3PO4 → Na3PO4 + HBr 7. C5H14 + O2 → CO2 + H2O

The answer is b i think

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).