P4O10 + 6PCl5 → 10POCl3
To calculate how many grams POCl3 will be formed from
5.0 g PCl5, you need

A) to know if the product is a gas.
B) to know whether either reactant is a gas.
C) information about the mass of P4O10 reacting.
D) information about the temperature and pressure at which the reaction occurs.

the awnser is group 12

explanation:

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.