A1.850 g mixture of srco3 and sro is heated. the srco3 decomposes to sro and co2. what was the mass percentage of srco3 in the mixture if the mass after heating is 1.445 g?

i believe the answer is true.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.