a solid of mass 125 g takes 4,500 joules of heat to melt. Upon further heating, it increases its temperature from the melting point of 25c. What is the specific latent heat of this in j/g and the amount of heat used? when the specific heat capacity of water 0.45 kj/kg. k.

it means there are 3 atoms of oxygen

the answer would be b i believe

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.