Part H Why is the number of hydrogen atoms and oxygen atoms the same in both the reactants and the products?

It's because they aren't destroyed they're just rearranged differently to create different products. There's like a name for this. It's something like the law of conservation energy. But the reason is mass cannot be created nor can it be destroyed.

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong

they are made of gases.

they have a spherical shape.

they make energy through fusion.